{"id":19366,"date":"2025-07-07T06:00:05","date_gmt":"2025-07-06T23:00:05","guid":{"rendered":"https:\/\/www.ckconitsha.com\/vn\/?p=19366"},"modified":"2025-07-08T02:35:38","modified_gmt":"2025-07-07T19:35:38","slug":"tong-hop-kien-thuc-luc-dien-tu-vat-ly-9-bai-tap-van-dung","status":"publish","type":"post","link":"https:\/\/www.ckconitsha.com\/vn\/tong-hop-kien-thuc-luc-dien-tu-vat-ly-9-bai-tap-van-dung\/","title":{"rendered":"T\u1ed5ng h\u1ee3p ki\u1ebfn th\u1ee9c l\u1ef1c \u0111i\u1ec7n t\u1eeb v\u1eadt l\u00fd 9 &amp; b\u00e0i t\u1eadp v\u1eadn d\u1ee5ng"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_79_2 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.ckconitsha.com\/vn\/tong-hop-kien-thuc-luc-dien-tu-vat-ly-9-bai-tap-van-dung\/#Luc_dien_tu_la_gi\" >L\u1ef1c \u0111i\u1ec7n t\u1eeb l\u00e0 g\u00ec?\u00a0<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.ckconitsha.com\/vn\/tong-hop-kien-thuc-luc-dien-tu-vat-ly-9-bai-tap-van-dung\/#Tac_dung_cua_tu_truong_len_day_dan_co_dong_dien\" >T\u00e1c d\u1ee5ng c\u1ee7a t\u1eeb tr\u01b0\u1eddng l\u00ean d\u00e2y d\u1eabn c\u00f3 d\u00f2ng \u0111i\u1ec7n\u00a0<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.ckconitsha.com\/vn\/tong-hop-kien-thuc-luc-dien-tu-vat-ly-9-bai-tap-van-dung\/#Luc_dien_tu_la_gi-2\" >L\u1ef1c \u0111i\u1ec7n t\u1eeb l\u00e0 g\u00ec\u00a0<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.ckconitsha.com\/vn\/tong-hop-kien-thuc-luc-dien-tu-vat-ly-9-bai-tap-van-dung\/#Chieu_cua_luc_dien_tu_quy_tac_ban_tay_trai\" >Chi\u1ec1u c\u1ee7a l\u1ef1c \u0111i\u1ec7n t\u1eeb, quy t\u1eafc b\u00e0n tay tr\u00e1i\u00a0<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.ckconitsha.com\/vn\/tong-hop-kien-thuc-luc-dien-tu-vat-ly-9-bai-tap-van-dung\/#Chieu_luc_dien_tu\" >Chi\u1ec1u l\u1ef1c \u0111i\u1ec7n t\u1eeb\u00a0<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.ckconitsha.com\/vn\/tong-hop-kien-thuc-luc-dien-tu-vat-ly-9-bai-tap-van-dung\/#Quy_tac_ban_tay_trai_xac_dinh_chieu_cua_luc_dien_tu\" >Quy t\u1eafc b\u00e0n tay tr\u00e1i x\u00e1c \u0111\u1ecbnh chi\u1ec1u c\u1ee7a l\u1ef1c \u0111i\u1ec7n t\u1eeb\u00a0<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.ckconitsha.com\/vn\/tong-hop-kien-thuc-luc-dien-tu-vat-ly-9-bai-tap-van-dung\/#Luc_dien_tu_%E2%80%93_mot_trong_4_luc_co_ban_cua_tu_nhien\" >L\u1ef1c \u0111i\u1ec7n t\u1eeb &#8211; m\u1ed9t trong 4 l\u1ef1c c\u01a1 b\u1ea3n c\u1ee7a t\u1ef1 nhi\u00ean<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.ckconitsha.com\/vn\/tong-hop-kien-thuc-luc-dien-tu-vat-ly-9-bai-tap-van-dung\/#Bai_tap_luc_dien_tu_vat_ly_9_bai_27\" >B\u00e0i t\u1eadp l\u1ef1c \u0111i\u1ec7n t\u1eeb v\u1eadt l\u00fd 9 b\u00e0i 27\u00a0<\/a><\/li><\/ul><\/nav><\/div>\n<\/p>\n<p dir=\"ltr\">Trong ch\u01b0\u01a1ng tr\u00ecnh v\u1eadt l\u00fd 9, c\u00e1c em s\u1ebd \u0111\u01b0\u1ee3c t\u00ecm hi\u1ec3u r\u1ea5t nhi\u1ec1u v\u1ec1 nh\u1eefng kh\u00e1i ni\u1ec7m xung quanh \u0111i\u1ec7n t\u1eeb h\u1ecdc, bao g\u1ed3m c\u1ea3 l\u1ef1c \u0111i\u1ec7n t\u1eeb. Trong b\u00e0i vi\u1ebft h\u00f4m nay, Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef s\u1ebd t\u1ed5ng h\u1ee3p l\u1ea1i ki\u1ebfn th\u1ee9c v\u1ec1 l\u1ef1c \u0111i\u1ec7n t\u1eeb v\u00e0 nh\u1eefng l\u00fd thuy\u1ebft li\u00ean quan v\u1ec1 l\u1ef1c \u0111i\u1ec7n t\u1eeb, hy v\u1ecdng c\u00f3 th\u1ec3 gi\u00fap c\u00e1c em hi\u1ec3u r\u00f5 h\u01a1n v\u00e0 \u00e1p d\u1ee5ng \u0111\u01b0\u1ee3c nhi\u1ec1u trong c\u00e1c b\u00e0i t\u1eadp nh\u00e9!<\/p>\n<p>                                                                    <img decoding=\"async\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img_default\/monkey3.png\" alt=\"\"><\/p>\n<p class=\"title\">H\u00e0ng tri\u1ec7u tr\u1ebb em \u0111\u00e3 ph\u00e1t tri\u1ec3n kh\u1ea3 n\u0103ng ng\u00f4n ng\u1eef c\u1ee7a m\u00ecnh th\u00f4ng qua c\u00e1c \u1ee9ng d\u1ee5ng h\u1ecdc t\u1eadp c\u1ee7a Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef<\/p>\n<p class=\"description\">\u0110\u0103ng k\u00fd ngay \u0111\u1ec3 \u0111\u01b0\u1ee3c Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef t\u01b0 v\u1ea5n mi\u1ec5n ph\u00ed v\u1ec1 s\u1ea3n ph\u1ea9m v\u00e0 l\u1ed9 tr\u00ecnh h\u1ecdc cho con.<\/p>\n<p>                                                                            *Vui l\u00f2ng ki\u1ec3m tra l\u1ea1i h\u1ecd t\u00ean<\/p>\n<p>                                                                            *Vui l\u00f2ng ki\u1ec3m tra l\u1ea1i S\u0110T<\/p>\n<p>                                                                                Th\u00e0nh th\u1ea1o 2.000+ t\u1eeb &amp; 6.000 c\u00e2u ti\u1ebfng anh<br \/>\n                                                                                Ph\u00e1t tri\u1ec3n to\u00e0n di\u1ec7n 4 k\u1ef9 n\u0103ng ti\u1ebfng anh<br \/>\n                                                                                Gi\u1ecfi To\u00e1n &#8211; ti\u1ebfng Anh theo ph\u01b0\u01a1ng ph\u00e1p hi\u1ec7n \u0111\u1ea1i<br \/>\n                                                                                Ph\u00e1t tri\u1ec3n EQ &amp; kh\u1ea3 n\u0103ng ti\u1ebfng Vi\u1ec7t<\/p>\n<p>                                                                                *B\u1ea1n ch\u01b0a ch\u1ecdn m\u1ee5c n\u00e0o!<\/p>\n<p>                                                                    \u0110\u0103ng K\u00fd T\u01b0 V\u1ea5n Mi\u1ec5n Ph\u00ed<\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Luc_dien_tu_la_gi\"><\/span>L\u1ef1c \u0111i\u1ec7n t\u1eeb l\u00e0 g\u00ec?\u00a0<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">L\u01b0\u0323c \u0111i\u1ec7n t\u1eeb (hay c\u00f2n th\u01b0\u1eddng \u0111\u01b0\u1ee3c g\u1ecdi ng\u1eafn g\u1ecdn l\u00e0 l\u01b0\u0323c t\u01b0\u0300) la\u0300 kha\u0301i ni\u00ea\u0323m \u0111\u01b0\u01a1\u0323c du\u0300ng \u0111\u00ea\u0309 chi\u0309 l\u01b0\u0323c cu\u0309a t\u01b0\u0300 tr\u01b0\u01a1\u0300ng ta\u0301c du\u0323ng l\u00ean ha\u0323t mang \u0111i\u00ea\u0323n ti\u0301ch chuy\u00ea\u0309n \u0111\u00f4\u0323ng.<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Tac_dung_cua_tu_truong_len_day_dan_co_dong_dien\"><\/span>T\u00e1c d\u1ee5ng c\u1ee7a t\u1eeb tr\u01b0\u1eddng l\u00ean d\u00e2y d\u1eabn c\u00f3 d\u00f2ng \u0111i\u1ec7n\u00a0<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">M\u1ed9t d\u00e2y d\u1eabn \u1edf trong tr\u1ea1ng th\u00e1i c\u00f3 d\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua, ch\u1ecbu t\u00e1c d\u1ee5ng l\u1ef1c c\u1ee7a m\u1ed9t t\u1eeb tr\u01b0\u1eddng, kh\u00f4ng song song v\u1edbi \u0111\u01b0\u1eddng s\u1ee9c t\u1eeb. L\u1ef1c \u0111i\u1ec7n t\u1eeb ch\u00ednh l\u00e0 l\u1ef1c m\u00e0 t\u1eeb tr\u01b0\u1eddng t\u00e1c d\u1ee5ng l\u00ean d\u00e2y d\u1eabn \u0111\u00f3.\u00a0<\/p>\n<p dir=\"ltr\">Th\u00ed nghi\u1ec7m ch\u1ee9ng minh (H17.4)<\/p>\n<p dir=\"ltr\">C\u00e1c d\u1ee5ng c\u1ee5 th\u00ed nghi\u1ec7m g\u1ed3m:<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Nam ch\u00e2m ch\u1eef U<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Thanh d\u00e2y AB b\u1eb1ng \u0111\u1ed3ng<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Hai thanh ray b\u1eb1ng \u0111\u1ed3ng n\u1eb1m ngang song song thanh d\u00e2y AB<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">\u0110o\u1ea1n d\u00e2y d\u1eabn c\u00f3 kho\u00e1 K<\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\">Quan s\u00e1t h\u00ecnh b\u00ean d\u01b0\u1edbi, ta nh\u1eadn th\u1ea5y khi kh\u00f3a K \u1edf trong tr\u1ea1ng th\u00e1i \u0111\u00f3ng, thanh d\u00e2y AB c\u00f3 c\u1ea5u t\u1ea1o b\u1eb1ng \u0111\u1ed3ng s\u1ebd c\u00f3 xu h\u01b0\u1edbng di chuy\u1ec3n tr\u00ean hai thanh ray c\u1ea5u t\u1ea1o b\u1eb1ng \u0111\u1ed3ng n\u1eb1m ngang song song v\u1edbi AB.\u00a0<\/p>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/luc-dien-tu-2.jpg\" alt=\"Th\u00ed nghi\u1ec7m cho th\u1ea5y t\u00e1c d\u1ee5ng c\u1ee7a t\u1eeb tr\u01b0\u1eddng l\u00ean d\u00e2y d\u1eabn c\u00f3 d\u00f2ng \u0111i\u1ec7n. (\u1ea2nh: S\u01b0u t\u1ea7m Internet)\" width=\"800\" height=\"500\"><\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Luc_dien_tu_la_gi-2\"><\/span>L\u1ef1c \u0111i\u1ec7n t\u1eeb l\u00e0 g\u00ec\u00a0<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\"><em>L\u1ef1c \u0111i\u1ec7n t\u1eeb hay g\u1ecdi t\u1eaft l\u00e0 l\u1ef1c t\u1eeb la\u0300 kha\u0301i ni\u00ea\u0323m \u0111\u01b0\u01a1\u0323c du\u0300ng \u0111\u00ea\u0309 chi\u0309 l\u01b0\u0323c cu\u0309a t\u01b0\u0300 tr\u01b0\u01a1\u0300ng ta\u0301c du\u0323ng l\u00ean ha\u0323t mang \u0111i\u00ea\u0323n ti\u0301ch chuy\u00ea\u0309n \u0111\u00f4\u0323ng.<\/em><\/p>\n<p dir=\"ltr\">L\u01b0\u0323c \u0111i\u00ea\u0323n t\u01b0\u0300 g\u00f4\u0300m c\u00f3 hai ph\u00e2\u0300n: g\u1ed3m l\u01b0\u0323c \u0111i\u00ea\u0323n do \u0111i\u00ea\u0323n tr\u01b0\u01a1\u0300ng ta\u0323o ra va\u0300 l\u01b0\u0323c t\u01b0\u0300 do t\u01b0\u0300 tr\u01b0\u01a1\u0300ng ta\u0323o ra.<\/p>\n<p dir=\"ltr\">\u0110i\u00ea\u0300u na\u0300y \u0111\u01b0\u01a1\u0323c th\u00ea\u0309 hi\u00ea\u0323n trong bi\u00ea\u0309u th\u01b0\u0301c toa\u0301n ho\u0323c c\u00f4\u0309 \u0111i\u00ea\u0309n v\u00ea\u0300 l\u01b0\u0323c \u0111i\u00ea\u0323n t\u01b0\u0300, khi chu\u0301ng ta \u0111a\u0303 bi\u00ea\u0301t ti\u0301nh ch\u00e2\u0301t cu\u0309a ha\u0323t mang \u0111i\u00ea\u0323n va\u0300 c\u01b0\u01a1\u0300ng \u0111\u00f4\u0323 \u0111i\u00ea\u0323n t\u01b0\u0300 tr\u01b0\u01a1\u0300ng. Bi\u1ec3u th\u1ee9c \u0111\u01b0\u1ee3c th\u1ec3 hi\u1ec7n nh\u01b0 sau:<\/p>\n<table style=\"border-collapse: collapse;width: 100.019%;border-color: #4e4c50;border-style: solid\" border=\"1\">\n<tr>\n<td style=\"width: 98.9117%;text-align: center;border: 0.5px solid #4e4c50\">\n<p>F = q.(E + vB)<\/p>\n<\/td>\n<\/tr>\n<\/table>\n<p dir=\"ltr\">Trong \u0111\u00f3:<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">E la\u0300 ve\u0301c-t\u01a1 c\u01b0\u01a1\u0300ng \u0111\u00f4\u0323 \u0111i\u00ea\u0323n tr\u01b0\u01a1\u0300ng ta\u0323i vi\u0323 tri\u0301 cu\u0309a ha\u0323t mang \u0111i\u00ea\u0323n ti\u0301ch.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">q la\u0300 \u0111i\u00ea\u0323n ti\u0301ch cu\u0309a ha\u0323t.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">v la\u0300 ve\u0301c-t\u01a1 v\u00e2\u0323n t\u00f4\u0301c cu\u0309a ha\u0323t.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">B la\u0300 ve\u0301c-t\u01a1 ca\u0309m \u01b0\u0301ng t\u01b0\u0300 ta\u0323i vi\u0323 tri\u0301 cu\u0309a ha\u0323t.<\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\">L\u01b0u \u00fd:<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">L\u01b0\u0323c \u0111i\u1ec7n t\u1eeb c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi v\u1edbi m\u1ed9t t\u00ean g\u1ecdi kh\u00e1c, \u0111\u00f3 l\u00e0 l\u1ef1c Lorentz. \u0110\u00e2y la\u0300 l\u01b0\u0323c \u0111\u01b0\u01a1\u0323c du\u0300ng \u0111\u00ea\u0309 chi\u0309 tha\u0300nh ph\u00e2\u0300n g\u00e2y ra b\u01a1\u0309i t\u1eeb tr\u01b0\u1eddng, tuy nhi\u00ean \u0111\u00f4i khi no\u0301 \u0111\u01b0\u01a1\u0323c du\u0300ng \u0111\u00ea\u0309 chi\u0309 ca\u0309 l\u01b0\u0323c \u0111i\u00ea\u0323n t\u01b0\u0300. B\u01a1\u0309i v\u00ec trong ly\u0301 thuy\u00ea\u0301t v\u00ea\u0300 \u0111i\u00ea\u0323n t\u01b0\u0300 va\u0300 ly\u0301 thuy\u00ea\u0301t t\u01b0\u01a1ng \u0111\u00f4\u0301i: \u0110i\u00ea\u0323n tr\u01b0\u01a1\u0300ng va\u0300 t\u01b0\u0300 tr\u01b0\u01a1\u0300ng \u0111\u01b0\u01a1\u0323c th\u00f4\u0301ng nh\u00e2\u0301t tha\u0300nh m\u00f4\u0323t tr\u01b0\u01a1\u0300ng va\u0300 ta\u0323o ra t\u01b0\u01a1ng ta\u0301c duy nh\u00e2\u0301t \u0111\u01b0\u01a1\u0323c go\u0323i la\u0300 tr\u01b0\u01a1\u0300ng \u0111i\u00ea\u0323n t\u01b0\u0300.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Vi\u00ea\u0323c th\u00f4\u0301ng nh\u00e2\u0301t gi\u1eefa l\u01b0\u0323c t\u01b0\u0300 va\u0300 l\u01b0\u0323c \u0111i\u00ea\u0323n tha\u0300nh m\u00f4\u0323t loa\u0323i l\u01b0\u0323c \u0111i\u00ea\u0323n t\u01b0\u0300 l\u00e0 hoa\u0300n toa\u0300n phu\u0300 h\u01a1\u0323p v\u01a1\u0301i quan \u0111i\u00ea\u0309m cu\u0309a ly\u0301 thuy\u00ea\u0301t \u201c\u0111i\u00ea\u0323n \u0111\u00f4\u0323ng l\u01b0\u0323c ho\u0323c l\u01b0\u01a1\u0323ng t\u01b0\u0309\u201d. Theo nh\u01b0 ly\u0301 thuy\u00ea\u0301t na\u0300y, l\u01b0\u0323c \u0111i\u00ea\u0323n t\u01b0\u0300 \u0111\u01b0\u01a1\u0323c ta\u0323o ra b\u01a1\u0309i s\u01b0\u0323 trao \u0111\u00f4\u0309i cu\u0309a ha\u0323t tr\u01b0\u01a1\u0300ng.<\/p>\n<\/li>\n<\/ul>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Chieu_cua_luc_dien_tu_quy_tac_ban_tay_trai\"><\/span>Chi\u1ec1u c\u1ee7a l\u1ef1c \u0111i\u1ec7n t\u1eeb, quy t\u1eafc b\u00e0n tay tr\u00e1i\u00a0<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Chieu_luc_dien_tu\"><\/span>Chi\u1ec1u l\u1ef1c \u0111i\u1ec7n t\u1eeb\u00a0<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">Chi\u1ec1u c\u1ee7a l\u1ef1c \u0111i\u1ec7n t\u1eeb l\u00e0 chi\u00ea\u0300u cu\u0309a \u0111\u01b0\u01a1\u0300ng s\u01b0\u0301c t\u01b0\u0300 va\u0300 chi\u00ea\u0300u cu\u0309a do\u0300ng \u0111i\u00ea\u0323n cha\u0323y \u1edf ph\u00eda b\u00ean trong d\u00e2y d\u00e2\u0303n quy\u00ea\u0301t \u0111i\u0323nh chi\u00ea\u0300u cu\u0309a l\u01b0\u0323c \u0111i\u00ea\u0323n t\u01b0\u0300 ta\u0301c du\u0323ng l\u00ean d\u00e2y d\u00e2\u0303n.<\/p>\n<p dir=\"ltr\">C\u00f3 hai y\u1ebfu t\u1ed1 chi ph\u1ed1i \u0111\u1ebfn chi\u1ec1u c\u1ee7a m\u1ed9t l\u1ef1c \u0111i\u1ec7n t\u1eeb t\u00e1c d\u1ee5ng l\u00ean m\u1ed9t d\u00e2y d\u1eabn l\u00e0:<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Khi qua d\u00e2y d\u1eabn, d\u00f2ng \u0111i\u1ec7n mang m\u1ed9t chi\u1ec1u nh\u01b0 th\u1ebf n\u00e0o.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Chi\u1ec1u c\u1ee7a \u0111\u01b0\u1eddng s\u1ee9c t\u1eeb.<\/p>\n<\/li>\n<\/ul>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Quy_tac_ban_tay_trai_xac_dinh_chieu_cua_luc_dien_tu\"><\/span>Quy t\u1eafc b\u00e0n tay tr\u00e1i x\u00e1c \u0111\u1ecbnh chi\u1ec1u c\u1ee7a l\u1ef1c \u0111i\u1ec7n t\u1eeb\u00a0<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">\u0110\u00ea\u0309 xa\u0301c \u0111i\u0323nh \u0111\u01b0\u01a1\u0323c chi\u00ea\u0300u cu\u0309a l\u01b0\u0323c \u0111i\u00ea\u0323n t\u01b0\u0300 chu\u0301ng ta s\u1ebd s\u01b0\u0309 du\u0323ng quy t\u0103\u0301c ba\u0300n tay tra\u0301i. Quy t\u1eafc n\u00e0y \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n nh\u01b0 d\u01b0\u1edbi \u0111\u00e2y:<\/p>\n<p dir=\"ltr\"><em>Th\u01b0\u0323c hi\u00ea\u0323n \u0111\u0103\u0323t ba\u0300n tay tra\u0301i sao cho ca\u0301c \u0111\u01b0\u01a1\u0300ng s\u01b0\u0301c t\u01b0\u0300 h\u01b0\u01a1\u0301ng va\u0300o trong lo\u0300ng ba\u0300n tay, chi\u00ea\u0300u t\u01b0\u0300 v\u1ecb tr\u00ed c\u00f4\u0309 tay \u0111\u00ea\u0301n v\u1ecb tr\u00ed ngo\u0301n gi\u01b0\u0303a ph\u1ea3i h\u01b0\u01a1\u0301ng theo chi\u00ea\u0300u cu\u0309a do\u0300ng \u0111i\u00ea\u0323n (chi\u1ec1u c\u1ee7a d\u00f2ng \u0111i\u1ec7n ch\u1ea1y b\u00ean trong \u1ed1ng d\u00e2y), ngo\u0301n tay ca\u0301i choa\u0303i ra 90 \u0111\u00f4\u0323 chi\u0309 chi\u00ea\u0300u cu\u0309a l\u01b0\u0323c \u0111i\u00ea\u0323n t\u01b0\u0300.<\/em><\/p>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/luc-dien-tu-3.jpg\" alt=\"Quy t\u1eafc b\u00e0n tay tr\u00e1i x\u00e1c \u0111\u1ecbnh chi\u1ec1u c\u1ee7a l\u1ef1c \u0111i\u1ec7n t\u1eeb. (\u1ea2nh: S\u01b0u t\u1ea7m Internet)\" width=\"800\" height=\"500\"><\/p>\n<p dir=\"ltr\">L\u01b0u \u00fd khi th\u1ef1c hi\u1ec7n quy t\u1eafc b\u00e0n tay tr\u00e1i:<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Gi\u1ea3 s\u1eed, d\u00e2y d\u1eabn \u0111\u1eb7t \u1edf v\u1ecb tr\u00ed song song \u0111\u1ed1i v\u1edbi \u0111\u01b0\u1eddng s\u1ee9c t\u1eeb th\u00ec d\u00e2y d\u1eabn s\u1ebd kh\u00f4ng ch\u1ecbu t\u00e1c d\u1ee5ng c\u1ee7a b\u1ea5t c\u1ee9 m\u1ed9t l\u1ef1c n\u00e0o.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">M\u1ed9t khung d\u00e2y ch\u1ecbu t\u00e1c d\u1ee5ng c\u1ee7a l\u1ef1c t\u1eeb th\u00f4ng th\u01b0\u1eddng s\u1ebd c\u00f3 xu h\u01b0\u1edbng quay tr\u00f2n, b\u1ecb n\u00e9n ho\u1eb7c b\u1ecb k\u00e9o d\u00e3n.<\/p>\n<\/li>\n<\/ul>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Luc_dien_tu_%E2%80%93_mot_trong_4_luc_co_ban_cua_tu_nhien\"><\/span>L\u1ef1c \u0111i\u1ec7n t\u1eeb &#8211; m\u1ed9t trong 4 l\u1ef1c c\u01a1 b\u1ea3n c\u1ee7a t\u1ef1 nhi\u00ean<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">L\u1ef1c \u0111i\u00ea\u0323n t\u01b0\u0300 la\u0300 m\u00f4\u0323t trong s\u00f4\u0301 b\u00f4\u0301n ngu\u00f4\u0300n l\u01b0\u0323c c\u01a1 ba\u0309n cu\u0309a t\u01b0\u0323 nhi\u00ean. Theo ly\u0301 thuy\u00ea\u0301t \u0111\u00f4\u0323ng l\u01b0\u0323c ho\u0323c l\u01b0\u01a1\u0323ng t\u01b0\u0309, l\u01b0\u0323c \u0111i\u1ec7n t\u1eeb \u0111\u01b0\u01a1\u0323c g\u00e2y ra b\u01a1\u0309i qua\u0301 tri\u0300nh trao \u0111\u00f4\u0309i ha\u0323t tr\u01b0\u01a1\u0300ng la\u0300 h\u1ea1t photon.<\/p>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/luc-dien-tu-4.jpg\" alt=\"L\u1ef1c \u0111i\u1ec7n t\u1eeb l\u00e0 m\u1ed9t trong 4 l\u1ef1c c\u01a1 b\u1ea3n c\u1ee7a t\u1ef1 nhi\u00ean. (\u1ea2nh: S\u01b0u t\u1ea7m Internet)\" width=\"800\" height=\"500\"><\/p>\n<p dir=\"ltr\">\u0110\u00e2y la\u0300 l\u01b0\u0323c n\u0103\u0300m trong ba\u0309n ch\u00e2\u0301t cu\u0309a h\u00e2\u0300u h\u00ea\u0301t ca\u0301c loa\u0323i l\u01b0\u0323c ma\u0300 hi\u1ec7n nay con ng\u01b0\u01a1\u0300i c\u00f3 th\u1ec3 quan sa\u0301t \u0111\u01b0\u01a1\u0323c trong cu\u1ed9c s\u1ed1ng ha\u0300ng nga\u0300y (ngoa\u0323i tr\u01b0\u0300 l\u01b0\u0323c h\u00e2\u0301p d\u00e2\u0303n cu\u0309a tra\u0301i \u0111\u00e2\u0301t). H\u00e2\u0300u nh\u01b0 mo\u0323i t\u01b0\u01a1ng ta\u0301c gi\u01b0\u0303a ca\u0301c nguy\u00ean t\u01b0\u0309 \u0111\u00ea\u0300u co\u0301 th\u00ea\u0309 quy \u0111\u01b0\u01a1\u0323c v\u00ea\u0300 l\u01b0\u0323c \u0111i\u00ea\u0323n t\u01b0\u0300 gi\u01b0\u0303a proton va\u0300 electron n\u0103\u0300m b\u00ean trong. L\u01b0\u0323c na\u0300y s\u1ebd sinh ra:<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">T\u01b0\u01a1ng ta\u0301c gi\u01b0\u0303a ca\u0301c ph\u00e2n t\u01b0\u0309.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Ca\u0301c l\u01b0\u0323c ke\u0301o va\u0300 \u0111\u00e2\u0309y khi ti\u00ea\u0301n ha\u0300nh ta\u0301c \u0111\u00f4\u0323ng c\u01a1 ho\u0323c va\u0300o ca\u0301c v\u00e2\u0323t.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">T\u01b0\u01a1ng ta\u0301c gi\u01b0\u0303a ca\u0301c quy\u0303 \u0111a\u0323o cu\u0309a Electron.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">\u0110i\u00ea\u0300u khi\u00ea\u0309n ca\u0301c pha\u0309n \u01b0\u0301ng ho\u0301a ho\u0323c.<\/p>\n<\/li>\n<\/ul>\n<p>Xem th\u00eam: To\u00e0n b\u1ed9 l\u00fd thuy\u1ebft v\u1ec1 m\u00e1y ph\u00e1t \u0111i\u1ec7n xoay chi\u1ec1u quan tr\u1ecdng c\u1ea7n nh\u1edb<\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Bai_tap_luc_dien_tu_vat_ly_9_bai_27\"><\/span>B\u00e0i t\u1eadp l\u1ef1c \u0111i\u1ec7n t\u1eeb v\u1eadt l\u00fd 9 b\u00e0i 27\u00a0<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">\u0110\u1ec3 \u00f4n l\u1ea1i v\u00e0 luy\u1ec7n t\u1eadp ch\u1eafc ph\u1ea7n l\u00fd thuy\u1ebft, d\u01b0\u1edbi \u0111\u00e2y l\u00e0 ph\u1ea7n b\u00e0i t\u1eadp trong b\u00e0i 27: L\u1ef1c \u0111i\u1ec7n t\u1eeb, v\u1eadt l\u00fd 9 c\u00f3 \u0111\u00e1p \u00e1n.<\/p>\n<p dir=\"ltr\">B\u00e0i 1 (Trang 61 SBT): H\u00ecnh 27.1 SBT m\u00f4 t\u1ea3 khung d\u00e2y c\u00f3 d\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua \u0111\u01b0\u1ee3c trong t\u1eeb tr\u01b0\u1eddng, trong \u0111\u00f3 khung quay \u0111ang c\u00f3 v\u1ecb tr\u00ed m\u00e0 m\u1eb7t ph\u1eb3ng khi vu\u00f4ng g\u00f3c v\u1edbi \u0111\u01b0\u1eddng s\u1ee9c t\u1eeb. V\u1ec1 v\u1ecb tr\u00ed n\u00e0y c\u1ee7a khung d\u00e2y, \u00fd ki\u1ebfn n\u00e0o d\u01b0\u1edbi \u0111\u00e2y l\u00e0 \u0111\u00fang?<\/p>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/luc-dien-tu-5.jpg\" alt=\"\" width=\"400\" height=\"250\"><\/p>\n<ol style=\"list-style-type: upper-alpha\">\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Khung kh\u00f4ng ch\u1ecbu t\u00e1c d\u1ee5ng c\u1ee7a l\u1ef1c \u0111i\u1ec7n t\u1eeb.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Khung ch\u1ecbu t\u00e1c d\u1ee5ng c\u1ee7a l\u1ef1c \u0111i\u1ec7n t\u1eeb nh\u01b0ng n\u00f3 kh\u00f4ng quay<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Khung ti\u1ebfp t\u1ee5c quay do t\u00e1c d\u1ee5ng c\u1ee7a l\u1ef1c \u0111i\u1ec7n t\u1eeb l\u00ean khung<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Khung quay ti\u1ebfp m\u1ed9t ch\u00fat n\u1eefa nh\u01b0ng kh\u00f4ng ph\u1ea3i do t\u00e1c d\u1ee5ng c\u1ee7a l\u1ef1c \u0111i\u1ec7n t\u1eeb m\u00e0 do qu\u00e1n t\u00ednh.<\/p>\n<\/li>\n<\/ol>\n<p dir=\"ltr\">L\u1eddi gi\u1ea3i:<\/p>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/luc-dien-tu-6.jpg\" alt=\"\" width=\"400\" height=\"250\"><\/p>\n<p dir=\"ltr\">C\u00e1c l\u1ef1c t\u1eeb t\u00e1c d\u1ee5ng l\u00ean khung d\u00e2y \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n nh\u01b0 h\u00ecnh v\u1ebd. C\u1eb7p l\u1ef1c n\u00e0y ch\u1ec9 c\u00f3 t\u00e1c d\u1ee5ng k\u00e9o d\u00e3n khung ch\u1ee9 kh\u00f4ng c\u00f3 t\u00e1c d\u1ee5ng l\u00e0m quay.<\/p>\n<p dir=\"ltr\">=&gt; Ch\u1ecdn c\u00e2u B. Khung ch\u1ecbu t\u00e1c d\u1ee5ng c\u1ee7a l\u1ef1c \u0111i\u1ec7n t\u1eeb nh\u01b0ng n\u00f3 kh\u00f4ng quay.<\/p>\n<p dir=\"ltr\">B\u00e0i 2 (Trang 61 SBT): H\u00ecnh 27.2 m\u00f4 t\u1ea3 \u0111o\u1ea1n d\u00e2y AB c\u00f3 d\u00f2ng \u0111i\u1ec7n \u0111i qua \u0111\u01b0\u1ee3c \u0111\u1eb7t \u1edf kho\u1ea3ng gi\u1eefa hai c\u1ef1c c\u1ee7a nam ch\u00e2m h\u00ecnh ch\u1eef U. Bi\u1ec3u di\u1ec5n l\u1ef1c \u0111i\u1ec7n t\u1eeb t\u00e1c d\u1ee5ng v\u00e0o AB. N\u1ebfu \u0111\u1ed5i chi\u1ec1u d\u00f2ng \u0111i\u1ec7n ho\u1eb7c \u0111\u1ed5i c\u1ef1c c\u1ee7a nam ch\u00e2m th\u00ec l\u1ef1c \u0111i\u1ec7n t\u1eeb s\u1ebd ra sao?<\/p>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/luc-dien-tu-7.jpg\" alt=\"\" width=\"400\" height=\"250\"><\/p>\n<p dir=\"ltr\">L\u1eddi gi\u1ea3i:<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">L\u1ef1c t\u1eeb t\u00e1c d\u1ee5ng l\u00ean d\u00e2y AB \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n nh\u01b0 h\u00ecnh v\u1ebd.<\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/luc-dien-tu-8.jpg\" alt=\"\" width=\"400\" height=\"250\"><\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">N\u1ebfu \u0111\u1ed5i chi\u1ec1u d\u00f2ng \u0111i\u1ec7n ho\u1eb7c \u0111\u1ed5i c\u1ef1c c\u1ee7a nam ch\u00e2m th\u00ec l\u1ef1c \u0111i\u1ec7n c\u00f3 chi\u1ec1u \u0111i t\u1eeb ngo\u00e0i v\u00e0o trong l\u00f2ng nam ch\u00e2m (h\u00ecnh 27.2b).<\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/luc-dien-tu-9.jpg\" alt=\"\" width=\"400\" height=\"250\"><\/p>\n<p dir=\"ltr\">B\u00e0i 3 (Trang 62 SBT): Khung d\u00e2y d\u1eabn ABCD c\u00f3 d\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua \u0111\u01b0\u1ee3c \u0111\u1eb7t trong t\u1eeb tr\u01b0\u1eddng c\u1ee7a nam ch\u00e2m v\u0129nh c\u1eedu (h\u00ecnh 27.3 SBT). M\u1eb7t ph\u1eb3ng c\u1ee7a khung d\u00e2y song song v\u1edbi c\u00e1c \u0111\u01b0\u1eddng s\u1ee9c t\u1eeb. H\u00e3y bi\u1ec3u di\u1ec5n l\u1ef1c \u0111i\u1ec7n t\u1eeb t\u00e1c d\u1ee5ng l\u00ean c\u00e1c c\u1ea1nh c\u1ee7a khung. C\u00e1c l\u1ef1c n\u00e0y l\u00e0m cho khung c\u00f3 xu h\u01b0\u1edbng chuy\u1ec3n \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o?<\/p>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/luc-dien-tu-10.jpg\" alt=\"\" width=\"400\" height=\"250\"><\/p>\n<p dir=\"ltr\">L\u1eddi gi\u1ea3i:<\/p>\n<p dir=\"ltr\">Chi\u1ec1u c\u1ee7a l\u1ef1c \u0111i\u1ec7n t\u1eeb \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n tr\u00ean h\u00ecnh 27.3a.<\/p>\n<p dir=\"ltr\">Khung quay theo chi\u1ec1u m\u0169i t\u00ean cong tr\u00ean h\u00ecnh v\u1ebd.<\/p>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/luc-dien-tu-11.jpg\" alt=\"\" width=\"400\" height=\"250\"><\/p>\n<p dir=\"ltr\">B\u00e0i 4 (Trang 62 SBT): H\u00ecnh 27.4 SBT m\u00f4 t\u1ea3 m\u1ed9t khung d\u00e2y d\u1eabn \u0111\u1ee9ng y\u00ean trong t\u1eeb tr\u01b0\u1eddng, m\u1eb7t c\u1ee7a khung vu\u00f4ng g\u00f3c v\u1edbi \u0111\u01b0\u1eddng s\u1ee9c t\u1eeb. N\u1ebfu \u0111\u1ed5i chi\u1ec1u d\u00f2ng \u0111i\u1ec7n ch\u1ea1y trong khung th\u00ec khung d\u00e2y c\u00f3 quay kh\u00f4ng? Gi\u1ea3i th\u00edch?<\/p>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/luc-dien-tu-12.jpg\" alt=\"\" width=\"400\" height=\"250\"><\/p>\n<p dir=\"ltr\">L\u1eddi gi\u1ea3i:<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Khi m\u1eb7t ph\u1eb3ng c\u1ee7a khung d\u00e2y vu\u00f4ng g\u00f3c v\u1edbi \u0111\u01b0\u1eddng s\u1ee9c t\u1eeb th\u00ec l\u1ef1c t\u1eeb t\u00e1c d\u1ee5ng l\u00ean c\u00e1c c\u1ea1nh c\u1ee7a khung d\u00e2y s\u1ebd n\u1eb1m trong m\u1eb7t ph\u1eb3ng khung d\u00e2y v\u00e0 vu\u00f4ng g\u00f3c v\u1edbi c\u00e1c c\u1ea1nh. V\u00ec v\u1eady c\u00e1c l\u1ef1c n\u00e0y c\u00f3 t\u00e1c d\u1ee5ng k\u00e9o c\u0103ng khung d\u00e2y nh\u01b0 h\u00ecnh 27.4a.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">N\u1ebfu \u0111\u1ed5i chi\u1ec1u d\u00f2ng \u0111i\u1ec7n ch\u1ea1y trong khung th\u00ec l\u1ef1c t\u1eeb s\u1ebd h\u01b0\u1edbng c\u00f9ng ph\u01b0\u01a1ng v\u00e0 ng\u01b0\u1ee3c chi\u1ec1u v\u1edbi c\u00e1c l\u1ef1c ban \u0111\u1ea7u. V\u00ec v\u1eady c\u00e1c l\u1ef1c t\u1eeb n\u00e0y c\u00f3 t\u00e1c d\u1ee5ng n\u00e9n khung ch\u1ee9 kh\u00f4ng c\u00f3 t\u00e1c d\u1ee5ng l\u00e0m quay khung.<\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/luc-dien-tu-13.jpg\" alt=\"\" width=\"400\" height=\"250\"><\/p>\n<p dir=\"ltr\">B\u00e0i 5 (Trang 62 SBT): M\u1ed9t thanh nam ch\u00e2m th\u1eb3ng \u0111\u00e3 b\u1ecb tr\u00f3c h\u1ebft v\u1ecf s\u01a1n, m\u1ea5t d\u1ea5u c\u00e1c c\u1ef1c. \u0110\u1ec3 x\u00e1c \u0111\u1ecbnh t\u00ean t\u1eeb c\u1ef1c, ta c\u00f3 th\u1ec3 cho t\u1eeb tr\u01b0\u1eddng c\u1ee7a thanh nam ch\u00e2m n\u00e0y t\u00e1c d\u1ee5ng l\u00ean m\u1ed9t d\u00e2y d\u1eabn th\u1eb3ng c\u00f3 d\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua.<\/p>\n<p dir=\"ltr\">a) H\u00e3y v\u1ebd h\u00ecnh m\u00f4 t\u1ea3 c\u00e1ch l\u00e0m n\u00e0y\u00a0<\/p>\n<p dir=\"ltr\">b) N\u00eau r\u00f5 c\u00e1ch x\u00e1c \u0111\u1ecbnh t\u00ean t\u1eeb c\u1ef1c c\u1ee7a thanh nam ch\u00e2m khi \u0111\u00f3<\/p>\n<p dir=\"ltr\">L\u1eddi gi\u1ea3i:<\/p>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/luc-dien-tu-14.jpg\" alt=\"\" width=\"400\" height=\"250\"><\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">B\u1ed1 tr\u00ed th\u00ed nghi\u1ec7m nh\u01b0 h\u00ecnh 27.5.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">N\u1ebfu d\u00e2y d\u1eabn chuy\u1ec3n \u0111\u1ed9ng l\u00ean tr\u00ean th\u00ec \u0111\u1ea7u N c\u1ee7a nam ch\u00e2m l\u00e0 c\u1ef1c B\u1eafc. V\u1eadn d\u1ee5ng quy t\u1eafc b\u00e0n tay tr\u00e1i \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh t\u00ean t\u1eeb c\u1ef1c c\u1ee7a nam ch\u00e2m.<\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\">B\u00e0i 6 (Trang 62 SBT): D\u00f9ng quy t\u1eafc n\u00e0o d\u01b0\u1edbi \u0111\u00e2y \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh chi\u1ec1u c\u1ee7a l\u1ef1c \u0111i\u1ec7n t\u1eeb:<\/p>\n<ol style=\"list-style-type: upper-alpha\">\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Quy t\u1eafc n\u1eafm tay ph\u1ea3i\u00a0<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Quy t\u1eafc n\u1eafm tay tr\u00e1i<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Quy t\u1eafc b\u00e0n tay ph\u1ea3i<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Quy t\u1eafc b\u00e0n tay tr\u00e1i<\/p>\n<\/li>\n<\/ol>\n<p dir=\"ltr\">L\u1eddi gi\u1ea3i:<\/p>\n<p dir=\"ltr\">=&gt; Ch\u1ecdn D. Quy t\u1eafc b\u00e0n tay tr\u00e1i<\/p>\n<p dir=\"ltr\">B\u00e0i 7 (Trang 63 SBT): Mu\u1ed1n x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c chi\u1ec1u c\u1ee7a l\u1ef1c \u0111i\u1ec7n t\u1eeb t\u00e1c d\u1ee5ng l\u00ean m\u1ed9t \u0111o\u1ea1n d\u00e2y d\u1eabn th\u1eb3ng c\u00f3 d\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua \u0111\u1eb7t t\u1ea1i m\u1ed9t \u0111i\u1ec3m trong t\u1eeb tr\u01b0\u1eddng th\u00ec c\u1ea7n ph\u1ea3i bi\u1ebft y\u1ebfu t\u1ed1 n\u00e0o?<\/p>\n<ol>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Chi\u1ec1u c\u1ee7a d\u00f2ng \u0111i\u1ec7n trong d\u00e2y d\u1eabn v\u00e0 chi\u1ec1u d\u00e0i c\u1ee7a d\u00e2y<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Chi\u1ec1u c\u1ee7a \u0111\u01b0\u1eddng s\u1ee9c t\u1eeb v\u00e0 c\u01b0\u1eddng \u0111\u1ed9 l\u1ef1c \u0111i\u1ec7n t\u1eeb t\u1ea1i \u0111i\u1ec3m \u0111\u00f3\u00a0<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Chi\u1ec1u c\u1ee7a d\u00f2ng \u0111i\u1ec7n v\u00e0 chi\u1ec1u c\u1ee7a \u0111\u01b0\u1eddng s\u1ee9c t\u1eeb t\u1ea1i \u0111i\u1ec3m \u0111\u00f3.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Chi\u1ec1u v\u00e0 c\u01b0\u1eddng \u0111\u1ed9 c\u1ee7a d\u00f2ng \u0111i\u1ec7n, chi\u1ec1u v\u00e0 c\u01b0\u1eddng \u0111\u1ed9 c\u1ee7a l\u1ef1c t\u1eeb t\u1ea1i \u0111i\u1ec3m \u0111\u00f3.<\/p>\n<\/li>\n<\/ol>\n<p dir=\"ltr\">L\u1eddi gi\u1ea3i:<\/p>\n<p dir=\"ltr\">=&gt; Ch\u1ecdn C. Chi\u1ec1u c\u1ee7a d\u00f2ng \u0111i\u1ec7n v\u00e0 chi\u1ec1u c\u1ee7a \u0111\u01b0\u1eddng s\u1ee9c t\u1eeb t\u1ea1i \u0111i\u1ec3m \u0111\u00f3.<\/p>\n<p dir=\"ltr\">B\u00e0i 8 (Trang 63 SBT): Khi d\u00e2y d\u1eabn th\u1eb3ng c\u00f3 d\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua \u0111\u01b0\u1ee3c \u0111\u1eb7t song song v\u1edbi c\u00e1c \u0111\u01b0\u1eddng s\u1ee9c t\u1eeb th\u00ec l\u1ef1c \u0111i\u1ec7n t\u1eeb c\u00f3 xu h\u01b0\u1edbng nh\u01b0 th\u1ebf n\u00e0o.?<\/p>\n<ol style=\"list-style-type: upper-alpha\">\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">C\u00f9ng h\u01b0\u1edbng v\u1edbi d\u00f2ng \u0111i\u1ec7n<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">C\u00f9ng h\u01b0\u1edbng v\u1edbi \u0111\u01b0\u1eddng s\u1ee9c t\u1eeb.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Vu\u00f4ng g\u00f3c v\u1edbi c\u1ea3 d\u00e2y d\u1eabn v\u00e0 \u0111\u01b0\u1eddng s\u1ee9c t\u1eeb.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Kh\u00f4ng c\u00f3 l\u1ef1c \u0111i\u1ec7n t\u1eeb.<\/p>\n<\/li>\n<\/ol>\n<p dir=\"ltr\">L\u1eddi gi\u1ea3i:<\/p>\n<p dir=\"ltr\">=&gt; Ch\u1ecdn D. Kh\u00f4ng c\u00f3 l\u1ef1c \u0111i\u1ec7n t\u1eeb.<\/p>\n<p dir=\"ltr\">B\u00e0i 9 (Trang 63 SBT): M\u1ed9t khung d\u00e2y d\u1eabn h\u00ecnh ch\u1eef nh\u1eadt c\u00f3 d\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua \u0111\u01b0\u1ee3c \u0111\u1eb7t trong t\u1eeb tr\u01b0\u1eddng gi\u1eefa hai nh\u00e1nh c\u1ee7a m\u1ed9t nam ch\u00e2m h\u00ecnh U. Khung d\u00e2y s\u1ebd quay \u0111\u1ebfn v\u1ecb tr\u00ed n\u00e0o th\u00ec d\u1eebng l\u1ea1i:<\/p>\n<ol style=\"list-style-type: upper-alpha\">\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">M\u1eb7t khung d\u00e2y song song v\u1edbi c\u00e1c \u0111\u01b0\u1eddng s\u1ee9c t\u1eeb.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">M\u1eb7t khung d\u00e2y vu\u00f4ng g\u00f3c v\u1edbi c\u00e1c \u0111\u01b0\u1eddng s\u1ee9c t\u1eeb.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">M\u1eb7t khung d\u00e2y t\u1ea1o th\u00e0nh m\u1ed9t g\u00f3c 60o v\u1edbi \u0111\u01b0\u1eddng s\u1ee9c t\u1eeb.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">M\u1eb7t khung d\u00e2y t\u1ea1o th\u00e0nh m\u1ed9t g\u00f3c 45o v\u1edbi \u0111\u01b0\u1eddng s\u1ee9c t\u1eeb.<\/p>\n<\/li>\n<\/ol>\n<p dir=\"ltr\">L\u1eddi gi\u1ea3i:<\/p>\n<p dir=\"ltr\">=&gt; Ch\u1ecdn B. M\u1eb7t khung d\u00e2y vu\u00f4ng g\u00f3c v\u1edbi c\u00e1c \u0111\u01b0\u1eddng s\u1ee9c t\u1eeb.<\/p>\n<p dir=\"ltr\">V\u00ec khi \u0111\u00f3 c\u00e1c l\u1ef1c t\u1eeb t\u00e1c d\u1ee5ng l\u00ean c\u00e1c c\u1ea1nh c\u1ee7a khung d\u00e2y s\u1ebd n\u1eb1m trong m\u1eb7t ph\u1eb3ng khung d\u00e2y v\u00e0 vu\u00f4ng g\u00f3c v\u1edbi c\u00e1c c\u1ea1nh. C\u00e1c l\u1ef1c n\u00e0y s\u1ebd c\u00f3 t\u00e1c d\u1ee5ng k\u00e9o c\u0103ng (ho\u1eb7c n\u00e9n) khung d\u00e2y nh\u01b0ng kh\u00f4ng l\u00e0m quay n\u00f3 n\u1eefa.<\/p>\n<p dir=\"ltr\">B\u00e0i vi\u1ebft tr\u00ean \u0111\u00e3 t\u1ed5ng h\u1ee3p c\u00e1c ki\u1ebfn th\u1ee9c v\u1ec1 l\u1ef1c \u0111i\u1ec7n t\u1eeb c\u0169ng nh\u01b0 nh\u1eefng kh\u00e1i ni\u1ec7m li\u00ean quan \u0111\u1ebfn l\u1ef1c \u0111i\u1ec7n t\u1eeb. Hy v\u1ecdng r\u1eb1ng, th\u00f4ng qua b\u00e0i vi\u1ebft n\u00e0y, c\u00e1c em c\u00f3 th\u1ec3 n\u1eafm v\u1eefng \u0111\u01b0\u1ee3c ki\u1ebfn th\u1ee9c v\u00e0 \u00e1p d\u1ee5ng \u0111\u01b0\u1ee3c nhi\u1ec1u v\u00e0o trong c\u00e1c b\u00e0i t\u1eadp. C\u1ea3m \u01a1n c\u00e1c em \u0111\u00e3 \u0111\u00f3n \u0111\u1ecdc b\u00e0i vi\u1ebft.<\/p>\n<p>Ngu\u1ed3n: <a href=\"http:\/\/www.ckconitsha.com\/vn\/\">http:\/\/www.ckconitsha.com\/vn\/<\/a> T\u00e1c gi\u1ea3: <a href=\"https:\/\/www.ckconitsha.com\/vn\/author\/nguyenlandung\">Nguy\u1ec5n L\u00e2n d\u0169ng<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Trong ch\u01b0\u01a1ng tr\u00ecnh v\u1eadt l\u00fd 9, c\u00e1c em s\u1ebd \u0111\u01b0\u1ee3c t\u00ecm hi\u1ec3u r\u1ea5t nhi\u1ec1u v\u1ec1 nh\u1eefng kh\u00e1i ni\u1ec7m xung quanh \u0111i\u1ec7n t\u1eeb h\u1ecdc, bao g\u1ed3m c\u1ea3 l\u1ef1c \u0111i\u1ec7n t\u1eeb. Trong b\u00e0i vi\u1ebft h\u00f4m nay, Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef s\u1ebd t\u1ed5ng h\u1ee3p l\u1ea1i ki\u1ebfn th\u1ee9c v\u1ec1 l\u1ef1c \u0111i\u1ec7n t\u1eeb v\u00e0 nh\u1eefng l\u00fd thuy\u1ebft&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[100],"tags":[],"class_list":["post-19366","post","type-post","status-publish","format-standard","hentry","category-kien-thuc"],"_links":{"self":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/19366","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/comments?post=19366"}],"version-history":[{"count":2,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/19366\/revisions"}],"predecessor-version":[{"id":24854,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/19366\/revisions\/24854"}],"wp:attachment":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/media?parent=19366"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/categories?post=19366"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/tags?post=19366"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}