{"id":19916,"date":"2025-07-07T11:45:05","date_gmt":"2025-07-07T04:45:05","guid":{"rendered":"https:\/\/www.ckconitsha.com\/vn\/?p=19916"},"modified":"2025-07-08T00:34:56","modified_gmt":"2025-07-07T17:34:56","slug":"toan-bo-ly-thuyet-dinh-luat-om-ohm-va-bai-tap-thuc-hanh","status":"publish","type":"post","link":"https:\/\/www.ckconitsha.com\/vn\/toan-bo-ly-thuyet-dinh-luat-om-ohm-va-bai-tap-thuc-hanh\/","title":{"rendered":"To\u00e0n b\u1ed9 l\u00fd thuy\u1ebft \u0111\u1ecbnh lu\u1eadt \u00f4m (ohm) v\u00e0 b\u00e0i t\u1eadp th\u1ef1c h\u00e0nh"},"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\/toan-bo-ly-thuyet-dinh-luat-om-ohm-va-bai-tap-thuc-hanh\/#Tuyen_bo_cua_Luat_Hug_la_gi\" >Tuy\u00ean b\u1ed1 c\u1ee7a Lu\u1eadt Hug l\u00e0 g\u00ec?<\/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\/toan-bo-ly-thuyet-dinh-luat-om-ohm-va-bai-tap-thuc-hanh\/#Noi_dung_cua_Luat_Hug_la_gi\" >N\u1ed9i dung c\u1ee7a Lu\u1eadt Hug l\u00e0 g\u00ec?<\/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\/toan-bo-ly-thuyet-dinh-luat-om-ohm-va-bai-tap-thuc-hanh\/#Lich_su_cua_luat_om\" >L\u1ecbch s\u1eed c\u1ee7a lu\u1eadt \u00f4m<\/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\/toan-bo-ly-thuyet-dinh-luat-om-ohm-va-bai-tap-thuc-hanh\/#Cong_thuc_cho_luat_om_lay_mach_chi_chua_dien_tro\" >C\u00f4ng th\u1ee9c cho lu\u1eadt \u00f4m l\u1ea5y m\u1ea1ch ch\u1ec9 ch\u1ee9a \u0111i\u1ec7n tr\u1edf<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.ckconitsha.com\/vn\/toan-bo-ly-thuyet-dinh-luat-om-ohm-va-bai-tap-thuc-hanh\/#Luat_om_cho_toan_bo_mach\" >Lu\u1eadt \u00f4m cho to\u00e0n b\u1ed9 m\u1ea1ch<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.ckconitsha.com\/vn\/toan-bo-ly-thuyet-dinh-luat-om-ohm-va-bai-tap-thuc-hanh\/#Cong_thuc_de_om_toan_bo_mach\" >C\u00f4ng th\u1ee9c \u0111\u1ec3 \u00f4m to\u00e0n b\u1ed9 m\u1ea1ch<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.ckconitsha.com\/vn\/toan-bo-ly-thuyet-dinh-luat-om-ohm-va-bai-tap-thuc-hanh\/#Nhan_xet_tu_luat_om_cho_toan_bo_mach\" >Nh\u1eadn x\u00e9t t\u1eeb lu\u1eadt \u00f4m cho to\u00e0n b\u1ed9 m\u1ea1ch<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.ckconitsha.com\/vn\/toan-bo-ly-thuyet-dinh-luat-om-ohm-va-bai-tap-thuc-hanh\/#Hien_tuong_chuc_nang\" >Hi\u1ec7n t\u01b0\u1ee3ng ch\u1ee9c n\u0103ng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.ckconitsha.com\/vn\/toan-bo-ly-thuyet-dinh-luat-om-ohm-va-bai-tap-thuc-hanh\/#Luat_om_toan_bo_mach_voi_luat_bao_ton_va_chuyen_hoa_nang_luong\" >Lu\u1eadt \u00f4m to\u00e0n b\u1ed9 m\u1ea1ch v\u1edbi lu\u1eadt b\u1ea3o t\u1ed3n v\u00e0 chuy\u1ec3n h\u00f3a n\u0103ng l\u01b0\u1ee3ng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.ckconitsha.com\/vn\/toan-bo-ly-thuyet-dinh-luat-om-ohm-va-bai-tap-thuc-hanh\/#Hieu_suat_cua_nguon_dien\" >Hi\u1ec7u su\u1ea5t c\u1ee7a ngu\u1ed3n \u0111i\u1ec7n<\/a><\/li><\/ul><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.ckconitsha.com\/vn\/toan-bo-ly-thuyet-dinh-luat-om-ohm-va-bai-tap-thuc-hanh\/#Tap_the_duc_de_ap_dung_luat_om\" >T\u1eadp th\u1ec3 d\u1ee5c \u0111\u1ec3 \u00e1p d\u1ee5ng lu\u1eadt \u00f4m<\/a><\/li><\/ul><\/nav><\/div>\n<\/p>\n<p dir=\"ltr\">Trong b\u00e0i vi\u1ebft tr\u01b0\u1edbc, h\u1ecd \u0111\u00e3 \u0111\u01b0\u1ee3c bi\u1ebft v\u1ec1 s\u1ef1 kh\u00e1ng c\u1ef1 c\u1ee7a nh\u1ea1c tr\u01b0\u1edfng v\u00e0 \u0111\u01b0\u1ee3c t\u00ecm hi\u1ec3u ng\u1eafn g\u1ecdn v\u1ec1 lu\u1eadt \u00f4m. Tuy nhi\u00ean, \u0111\u1ec3 hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 kh\u00e1i ni\u1ec7m \u00f4m l\u00e0 g\u00ec? C\u00f4ng th\u1ee9c t\u00ednh to\u00e1n nh\u01b0 th\u1ebf n\u00e0o? Vi\u1ec7c \u00e1p d\u1ee5ng Lu\u1eadt Hug? B\u00e0i vi\u1ebft h\u00f4m nay s\u1ebd gi\u00fap b\u1ea1n tr\u1ea3 l\u1eddi c\u00e1c c\u00e2u h\u1ecfi tr\u00ean m\u1ed9t c\u00e1ch c\u1ea9n th\u1eadn!<\/p>\n<p>                                    <img decoding=\"async\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/image\/600x480.png\"><\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Tuyen_bo_cua_Luat_Hug_la_gi\"><\/span>Tuy\u00ean b\u1ed1 c\u1ee7a Lu\u1eadt Hug l\u00e0 g\u00ec? <span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/dinh-luat-om-1.jpg\" alt=\"L\u00fd thuy\u1ebft v\u1ec1 lu\u1eadt \u00f4m. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"100%\"><\/p>\n<p dir=\"ltr\">Lu\u1eadt \u00f4m l\u00e0 lu\u1eadt v\u1eadt l\u00fd v\u1ec1 s\u1ef1 ph\u1ee5 thu\u1ed9c v\u00e0o d\u00f2ng \u0111i\u1ec7n c\u1ee7a \u0111i\u1ec7n \u00e1p v\u00e0 s\u1ee9c \u0111\u1ec1 kh\u00e1ng.<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Noi_dung_cua_Luat_Hug_la_gi\"><\/span>N\u1ed9i dung c\u1ee7a Lu\u1eadt Hug l\u00e0 g\u00ec? <span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">N\u1ed9i dung c\u1ee7a lu\u1eadt \u00f4m: c\u01b0\u1eddng \u0111\u1ed9 v\u01b0\u1ee3t qua hai \u0111i\u1ec3m c\u1ee7a m\u1ed9t d\u00e2y d\u1eabn lu\u00f4n t\u1ef7 l\u1ec7 thu\u1eadn v\u1edbi \u0111i\u1ec7n \u00e1p \u0111i qua hai \u0111i\u1ec3m \u0111\u00f3 v\u00e0 t\u1ef7 l\u1ec7 ngh\u1ecbch v\u1edbi \u0111i\u1ec7n tr\u1edf c\u1ee7a d\u00e2y d\u1eabn.<\/p>\n<p dir=\"ltr\">Lu\u1eadt Hug \u0111\u01b0\u1ee3c th\u1ec3 hi\u1ec7n b\u1eb1ng h\u1ec7 th\u1ed1ng sau:<\/p>\n<table style=\"border-collapse: collapse;width: 100%;border-color: #4E4C50;border-style: solid\" border=\"1\">\n<tr>\n<td style=\"width: 99.0477%;text-align: center;border: 0.5px solid #4e4c50\">\n<p>              I = u\/r<\/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\">T\u00f4i l\u00e0 c\u01b0\u1eddng \u0111\u1ed9 \u0111i qua d\u00e2y d\u1eabn (thi\u1ebft b\u1ecb l\u00e0 ampe k\u1ebf, bi\u1ec3u t\u01b0\u1ee3ng: a)<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">U l\u00e0 \u0111i\u1ec7n \u00e1p tr\u00ean d\u00e2y d\u1eabn (thi\u1ebft b\u1ecb l\u00e0 voltment, bymple: v)<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">R l\u00e0 \u0111i\u1ec7n tr\u1edf (\u0111\u01a1n v\u1ecb \u0111ang \u00f4m, bi\u1ec3u t\u01b0\u1ee3ng: \u03c9)<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">\u0110i\u1ec7n \u00e1p c\u1ee7a d\u00e2y d\u1eabn l\u00e0 s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 \u0111i\u1ec7n \u00e1p gi\u1eefa hai c\u1ef1c c\u1ee7a m\u1ed9t ngu\u1ed3n<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">\u0110i\u1ec7n tr\u1edf d\u00e2y d\u1eabn (R) ch\u1ec9 \u0111\u1eb7c tr\u01b0ng cho c\u00e1c thu\u1ed9c t\u00ednh c\u1ea3n tr\u1edf d\u00f2ng \u0111i\u1ec7n. <\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\">L\u01b0u \u00fd: Trong \u0111\u1ecbnh lu\u1eadt c\u1ee7a Ohm, \u0111i\u1ec7n tr\u1edf R kh\u00f4ng ph\u1ee5 thu\u1ed9c v\u00e0o c\u01b0\u1eddng \u0111\u1ed9 hi\u1ec7n t\u1ea1i v\u00e0 r lu\u00f4n lu\u00f4n l\u00e0 h\u1eb1ng s\u1ed1.<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Lich_su_cua_luat_om\"><\/span>L\u1ecbch s\u1eed c\u1ee7a lu\u1eadt \u00f4m <span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">Lu\u1eadt OHM \u0111\u01b0\u1ee3c \u0111\u1eb7t theo t\u00ean c\u1ee7a nh\u00e0 v\u1eadt l\u00fd n\u1ed5i ti\u1ebfng ng\u01b0\u1eddi \u0110\u1ee9c &#8211; Georg Ohm. Lu\u1eadt \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1 v\u00e0o n\u0103m 1827 tr\u00ean m\u1ed9t b\u00e0i b\u00e1o, m\u00f4 t\u1ea3 c\u00e1c ph\u00e9p \u0111o \u0111i\u1ec7n \u00e1p v\u00e0 d\u00f2ng \u0111i\u1ec7n th\u00f4ng qua m\u1ed9t m\u1ea1ch \u0111\u01a1n gi\u1ea3n c\u1ee7a nhi\u1ec1u d\u00e2y c\u00f3 \u0111\u1ed9 d\u00e0i kh\u00e1c nhau. Tr\u00ean th\u1ef1c t\u1ebf, \u00f4ng \u0111\u00e3 tr\u00ecnh b\u00e0y m\u1ed9t ph\u01b0\u01a1ng tr\u00ecnh ph\u1ee9c t\u1ea1p h\u01a1n m\u1ed9t ch\u00fat so v\u1edbi c\u00f4ng th\u1ee9c tr\u00ean \u0111\u1ec3 gi\u1ea3i th\u00edch k\u1ebft qu\u1ea3 th\u1eed nghi\u1ec7m c\u1ee7a m\u00ecnh.<\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Cong_thuc_cho_luat_om_lay_mach_chi_chua_dien_tro\"><\/span>C\u00f4ng th\u1ee9c cho lu\u1eadt \u00f4m l\u1ea5y m\u1ea1ch ch\u1ec9 ch\u1ee9a \u0111i\u1ec7n tr\u1edf<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">C\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng ch\u1ea3y qua m\u1ea1ch ch\u1ec9 ch\u1ee9a \u0111i\u1ec7n tr\u1edf R t\u1ef7 l\u1ec7 thu\u1eadn v\u1edbi \u0111i\u1ec7n \u00e1p U \u0111\u1eb7t \u1edf hai \u0111\u1ea7u c\u1ee7a m\u1ea1ch v\u00e0 t\u1ef7 l\u1ec7 ngh\u1ecbch v\u1edbi \u0111i\u1ec7n tr\u1edf R.<\/p>\n<ul>\n<li dir=\"ltr\">C\u00f4ng th\u1ee9c \u0111\u1ec3 \u00f4m m\u1ea1ch \u0111\u01b0\u1ee3c t\u00ednh b\u1eb1ng c\u00f4ng th\u1ee9c sau:<\/li>\n<\/ul>\n<table style=\"border-collapse: collapse;width: 100%;border-color: #4E4C50;border-style: solid\" border=\"1\">\n<tr>\n<td style=\"width: 99.0477%;text-align: center;border: 0.5px solid #4e4c50\">\n<p>          I = u\/r ho\u1eb7c u = ir<\/p>\n<\/td>\n<\/tr>\n<\/table>\n<p dir=\"ltr\">Trong \u0111\u00f3:<\/p>\n<p dir=\"ltr\">T\u00f4i l\u00e0 c\u01b0\u1eddng \u0111\u1ed9 \u0111i qua d\u00e2y d\u1eabn (a)<\/p>\n<p dir=\"ltr\">U l\u00e0 \u0111i\u1ec7n \u00e1p tr\u00ean d\u00e2y d\u1eabn (v)<\/p>\n<p dir=\"ltr\">R l\u00e0 \u0111i\u1ec7n tr\u1edf ()<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">\u0110\u1ed1i v\u1edbi c\u00e1c m\u1ea1ch c\u00f3 s\u1ee9c \u0111\u1ec1 kh\u00e1ng trong lo\u1ea1t: <\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" style=\"margin-left: auto;margin-right: auto\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/dinh-luat-om-2.jpg\" alt=\"\" width=\"300\" height=\"188\"><\/p>\n<p dir=\"ltr\" style=\"text-align: center\">R = r1 + r2 + &#8230; + rn<\/p>\n<p dir=\"ltr\" style=\"text-align: center\">U = u1 + u2 + &#8230; + un<\/p>\n<p dir=\"ltr\" style=\"text-align: center\">I = i1 = i2 = &#8230; = in<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Cho m\u1ea1ch \u0111i\u1ec7n tr\u1edf song song:<\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" style=\"margin-left: auto;margin-right: auto\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/dinh-luat-om-3.jpg\" alt=\"\" width=\"300\" height=\"188\"><\/p>\n<p dir=\"ltr\" style=\"text-align: center\">1\/r = 1\/r1 +1\/r2 +&#8230; +1\/rn<\/p>\n<p dir=\"ltr\" style=\"text-align: center\">U = u1 = u2 = &#8230; = un<\/p>\n<p dir=\"ltr\" style=\"text-align: center\">I = i1 + i2 + &#8230; + in<\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Luat_om_cho_toan_bo_mach\"><\/span>Lu\u1eadt \u00f4m cho to\u00e0n b\u1ed9 m\u1ea1ch<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">Cu\u1ed9c th\u00ed nghi\u1ec7m:<\/p>\n<p dir=\"ltr\">\u0110\u1ed1i v\u1edbi m\u1ed9t m\u1ea1ch nh\u01b0 h\u00ecnh d\u01b0\u1edbi \u0111\u00e2y: <\/p>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" style=\"margin-left: auto;margin-right: auto\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/dinh-luat-om-4.jpg\" alt=\"\" width=\"800\" height=\"500\"><\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">C\u1ee5 th\u1ec3, ampe k\u1ebf (v\u1edbi R r\u1ea5t nh\u1ecf) \u0111o c\u01b0\u1eddng \u0111\u1ed9 I c\u1ee7a d\u00f2ng \u0111i\u1ec7n ch\u1ea3y trong m\u1ea1ch k\u00edn, v\u00f4n k\u1ebf (v\u1edbi R r\u1ea5t l\u1edbn) \u0111o \u0111i\u1ec7n \u00e1p b\u00ean ngo\u00e0i UN v\u00e0 \u0111i\u1ec7n tr\u1edf cho ph\u00e9p thay \u0111\u1ed5i \u0111i\u1ec7n tr\u1edf m\u1ea1ch ngo\u00e0i.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Ti\u1ebfn h\u00e0nh c\u00e1c th\u00ed nghi\u1ec7m v\u1edbi m\u1ea1ch n\u00e0y cho c\u00e1c gi\u00e1 tr\u1ecb I v\u00e0 UN th\u00edch b\u1ea3ng d\u01b0\u1edbi \u0111\u00e2y:<\/p>\n<\/li>\n<\/ul>\n<table style=\"border-collapse: collapse;width: 32.0876%;border-color: #4e4c50;border-style: solid\" border=\"0.5px\">\n<tr>\n<td style=\"border: 0.5px solid #4e4c50\">\n<p dir=\"ltr\">T\u00f4i (a)<\/p>\n<\/td>\n<td style=\"border: 0.5px solid #4e4c50;text-align: center\">\n<p dir=\"ltr\">0<\/p>\n<\/td>\n<td style=\"border: 0.5px solid #4e4c50;text-align: center\">\n<p dir=\"ltr\">0,1<\/p>\n<\/td>\n<td style=\"border: 0.5px solid #4e4c50;text-align: center\">\n<p dir=\"ltr\">0,15<\/p>\n<\/td>\n<td style=\"border: 0.5px solid #4e4c50;text-align: center\">\n<p dir=\"ltr\">0,2<\/p>\n<\/td>\n<td style=\"border: 0.5px solid #4e4c50;text-align: center\">\n<p dir=\"ltr\">0,25<\/p>\n<\/td>\n<td style=\"border: 0.5px solid #4e4c50;text-align: center\">\n<p dir=\"ltr\">0,3<\/p>\n<\/td>\n<td style=\"border: 0.5px solid #4e4c50;text-align: center\">\n<p dir=\"ltr\">0,35<\/p>\n<\/td>\n<td style=\"border: 0.5px solid #4e4c50;text-align: center\">\n<p dir=\"ltr\">0,4<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 0.5px solid #4e4c50\">\n<p dir=\"ltr\">U (v)<\/p>\n<\/td>\n<td style=\"border: 0.5px solid #4e4c50;text-align: center\">\n<p dir=\"ltr\">3.05<\/p>\n<\/td>\n<td style=\"border: 0.5px solid #4e4c50;text-align: center\">\n<p dir=\"ltr\">2.9<\/p>\n<\/td>\n<td style=\"border: 0.5px solid #4e4c50;text-align: center\">\n<p dir=\"ltr\">2.8<\/p>\n<\/td>\n<td style=\"border: 0.5px solid #4e4c50;text-align: center\">\n<p dir=\"ltr\">2,75<\/p>\n<\/td>\n<td style=\"border: 0.5px solid #4e4c50;text-align: center\">\n<p dir=\"ltr\">2.7<\/p>\n<\/td>\n<td style=\"border: 0.5px solid #4e4c50;text-align: center\">\n<p dir=\"ltr\">2,55<\/p>\n<\/td>\n<td style=\"border: 0.5px solid #4e4c50;text-align: center\">\n<p dir=\"ltr\">2.5<\/p>\n<\/td>\n<td style=\"border: 0.5px solid #4e4c50;text-align: center\">\n<p dir=\"ltr\">2.4<\/p>\n<\/td>\n<\/tr>\n<\/table>\n<ul>\n<li dir=\"ltr\" role=\"presentation\">Bi\u1ec3u \u0111\u1ed3 hi\u1ec3n th\u1ecb c\u00e1c gi\u00e1 tr\u1ecb \u0111o n\u00e0y:<\/li>\n<\/ul>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" style=\"margin-left: auto;margin-right: auto\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/dinh-luat-om-5.jpg\" alt=\"\" width=\"800\" height=\"500\"><\/p>\n<p dir=\"ltr\">Tuy\u00ean b\u1ed1 v\u1ec1 lu\u1eadt \u00f4m cho to\u00e0n b\u1ed9 m\u1ea1ch: c\u01b0\u1eddng \u0111\u1ed9 ch\u1ea1y trong m\u1ea1ch k\u00edn t\u1ef7 l\u1ec7 thu\u1eadn v\u1edbi c\u00f4ng su\u1ea5t \u0111\u1ed9ng c\u1ee7a ngu\u1ed3n n\u0103ng l\u01b0\u1ee3ng v\u00e0 t\u1ef7 l\u1ec7 ngh\u1ecbch v\u1edbi t\u1ed5ng \u0111i\u1ec7n tr\u1edf c\u1ee7a m\u1ea1ch \u0111\u00f3.<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Cong_thuc_de_om_toan_bo_mach\"><\/span>C\u00f4ng th\u1ee9c \u0111\u1ec3 \u00f4m to\u00e0n b\u1ed9 m\u1ea1ch <span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">C\u00f4ng th\u1ee9c cho \u0111\u1ecbnh lu\u1eadt ch\u1ea5p nh\u1eadn to\u00e0n b\u1ed9 m\u1ea1ch \u0111\u01b0\u1ee3c t\u00ednh b\u1eb1ng:<\/p>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" style=\"margin-left: auto;margin-right: auto\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/Capture.JPG\" alt=\"\" width=\"300\" height=\"120\"><\/p>\n<p dir=\"ltr\">Trong \u0111\u00f3:<\/p>\n<ul>\n<li dir=\"ltr\">I: c\u01b0\u1eddng \u0111\u1ed9 c\u1ee7a m\u1ea1ch k\u00edn (a)<\/li>\n<li dir=\"ltr\">E: Kh\u1ea3 n\u0103ng \u0111\u1ed9ng (V)<\/li>\n<li dir=\"ltr\">R: \u0110i\u1ec7n tr\u1edf b\u00ean ngo\u00e0i ()<\/li>\n<li dir=\"ltr\">R: \u0110i\u1ec7n tr\u1edf trong (\u03c9)<\/li>\n<\/ul>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Nhan_xet_tu_luat_om_cho_toan_bo_mach\"><\/span>Nh\u1eadn x\u00e9t t\u1eeb lu\u1eadt \u00f4m cho to\u00e0n b\u1ed9 m\u1ea1ch <span class=\"ez-toc-section-end\"><\/span><\/h3>\n<h4 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Hien_tuong_chuc_nang\"><\/span>Hi\u1ec7n t\u01b0\u1ee3ng ch\u1ee9c n\u0103ng <span class=\"ez-toc-section-end\"><\/span><\/h4>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">\u0110\u00e2y l\u00e0 m\u1ed9t hi\u1ec7n t\u01b0\u1ee3ng x\u1ea3y ra khi k\u1ebft n\u1ed1i hai c\u1ef1c c\u1ee7a ngu\u1ed3n \u0111i\u1ec7n v\u1edbi m\u1ed9t d\u00e2y c\u00f3 \u0111i\u1ec7n tr\u1edf r\u1ea5t nh\u1ecf.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Khi hi\u1ec7n t\u01b0\u1ee3ng ng\u1eafn m\u1ea1ch, d\u00f2ng \u0111i\u1ec7n ch\u1ea3y qua m\u1ea1ch s\u1ebd c\u00f3 c\u01b0\u1eddng \u0111\u1ed9 l\u1edbn v\u00e0 g\u00e2y ra c\u00e1c v\u1ea5n \u0111\u1ec1 ng\u1eafn m\u1ea1ch, \u0111\u00e2y l\u00e0 m\u1ed9t trong nh\u1eefng nguy\u00ean nh\u00e2n c\u1ee7a nhi\u1ec1u l\u1eeda (RN \u2248 0):<\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\">                              I = e\/r <\/p>\n<h4 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Luat_om_toan_bo_mach_voi_luat_bao_ton_va_chuyen_hoa_nang_luong\"><\/span>Lu\u1eadt \u00f4m to\u00e0n b\u1ed9 m\u1ea1ch v\u1edbi lu\u1eadt b\u1ea3o t\u1ed3n v\u00e0 chuy\u1ec3n h\u00f3a n\u0103ng l\u01b0\u1ee3ng <span class=\"ez-toc-section-end\"><\/span><\/h4>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">S\u1ee9c m\u1ea1nh c\u1ee7a ngu\u1ed3n n\u0103ng l\u01b0\u1ee3ng \u0111\u00e3 h\u1ebft th\u1eddi gian T: A = E.IT<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Nhi\u1ec7t t\u1ecfa ra tr\u00ean to\u00e0n b\u1ed9 m\u1ea1ch<img loading=\"lazy\" decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/cong-thuc-dinh-luat-om-1.JPG\" alt=\"\" width=\"131\" height=\"47\"><\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Theo lu\u1eadt b\u1ea3o t\u1ed3n n\u0103ng l\u01b0\u1ee3ng: <img loading=\"lazy\" decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/cong-thuc-dinh-luat-om-2.JPG\" alt=\"\" width=\"300\" height=\"62\"><\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\">=&gt; Lu\u1eadt \u00f4m cho to\u00e0n b\u1ed9 m\u1ea1ch l\u00e0 ho\u00e0n to\u00e0n ph\u00f9 h\u1ee3p v\u1edbi lu\u1eadt b\u1ea3o t\u1ed3n v\u00e0 chuy\u1ec3n h\u00f3a n\u0103ng l\u01b0\u1ee3ng.<\/p>\n<h4 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Hieu_suat_cua_nguon_dien\"><\/span>Hi\u1ec7u su\u1ea5t c\u1ee7a ngu\u1ed3n \u0111i\u1ec7n <span class=\"ez-toc-section-end\"><\/span><\/h4>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">C\u00f4ng th\u1ee9c hi\u1ec7u qu\u1ea3 c\u1ee7a ngu\u1ed3n n\u0103ng l\u01b0\u1ee3ng:<\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\">    <img loading=\"lazy\" decoding=\"async\" style=\"margin-left: auto;margin-right: auto\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/cong-thuc-dinh-luat-om-3.JPG\" alt=\"\" width=\"398\" height=\"124\"><\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">N\u1ebfu m\u1ea1ch ngo\u00e0i ch\u1ec9 c\u00f3 \u0111i\u1ec7n tr\u1edf RN:<\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" style=\"margin-left: auto;margin-right: auto\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/cong-thuc-dinh-luat-om-4.JPG\" alt=\"\" width=\"205\" height=\"94\"><\/p>\n<p dir=\"ltr\">Xem th\u00eam: Gi\u1ea3i th\u00edch s\u1ee9c \u0111\u1ec1 kh\u00e1ng c\u1ee7a d\u00e2y d\u1eabn, c\u00e1c b\u00e0i t\u1eadp c\u00f4ng th\u1ee9c &amp; th\u1ef1c h\u00e0nh<\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Tap_the_duc_de_ap_dung_luat_om\"><\/span>T\u1eadp th\u1ec3 d\u1ee5c \u0111\u1ec3 \u00e1p d\u1ee5ng lu\u1eadt \u00f4m <span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">B\u00e0i 1: \u0110i\u1ec7n tr\u1edf t\u01b0\u01a1ng \u0111\u01b0\u01a1ng c\u1ee7a m\u1ea1ch AB c\u00f3 s\u01a1 \u0111\u1ed3 nh\u01b0 trong h\u00ecnh l\u00e0 Rab = 10, trong \u0111\u00f3 c\u00e1c \u0111i\u1ec7n tr\u1edf R1 = 7; R2 = 12. H\u1ecfi gi\u00e1 tr\u1ecb RX gi\u00e1 tr\u1ecb sau \u0111\u00e2y l\u00e0 g\u00ec?<\/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\/dinh-luat-om-6.png\" alt=\"\" width=\"400\" height=\"156\"><\/p>\n<p dir=\"ltr\">A. 9 <\/p>\n<p dir=\"ltr\">B. 5 <\/p>\n<p dir=\"ltr\">C. 15 <\/p>\n<p dir=\"ltr\">D. 4<\/p>\n<p dir=\"ltr\">B\u00e0i 2: \u0110i\u1ec7n tr\u1edf R1 = 6, R2 = 9, r3 = 15\u03a9 ch\u1ecbu \u0111\u01b0\u1ee3c c\u01b0\u1eddng \u0111\u1ed9 t\u1ed1i \u0111a c\u1ee7a i1 = 5a, i2 = 2a, i3 = 3a. Bao nhi\u00eau l\u00e0 \u0111i\u1ec7n \u00e1p l\u1edbn nh\u1ea5t c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u1eb7t \u1edf hai \u0111\u1ea7u c\u1ee7a m\u1ea1ch c\u1ee7a 3 \u0111i\u1ec7n tr\u1edf \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i n\u1ed1i ti\u1ebfp?<\/p>\n<p dir=\"ltr\">A. 45V <\/p>\n<p dir=\"ltr\">B. 60v <\/p>\n<p dir=\"ltr\">C. 93V <\/p>\n<p dir=\"ltr\">D. 150v<\/p>\n<p dir=\"ltr\">B\u00e0i 3: Khi \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i n\u1ed1i ti\u1ebfp, hai \u0111i\u1ec7n tr\u1edf R1 v\u00e0 R2 \u0111\u1ebfn \u0111i\u1ec7n \u00e1p 1,2V, d\u00f2ng \u0111i\u1ec7n ch\u1ea3y qua ch\u00fang v\u1edbi c\u01b0\u1eddng \u0111\u1ed9 I = 0,12A.<\/p>\n<p dir=\"ltr\">a) T\u00ednh \u0111i\u1ec7n tr\u1edf t\u01b0\u01a1ng \u0111\u01b0\u01a1ng c\u1ee7a m\u1ea1ch n\u1ed1i ti\u1ebfp n\u00e0y.<\/p>\n<p dir=\"ltr\">b) N\u1ebfu hai \u0111i\u1ec7n tr\u1edf b\u1ecb k\u1eb9t song song v\u1edbi \u0111i\u1ec7n \u00e1p 1,2V, th\u00ec d\u00f2ng \u0111i\u1ec7n ch\u1ea3y qua \u0111i\u1ec7n tr\u1edf R1 c\u00f3 c\u01b0\u1eddng \u0111\u1ed9 I1 g\u1ea5p 1,5 l\u1ea7n so v\u1edbi c\u01b0\u1eddng \u0111\u1ed9 I2 c\u1ee7a d\u00f2ng \u0111i\u1ec7n ch\u1ea3y qua \u0111i\u1ec7n tr\u1edf R2. T\u00ednh to\u00e1n \u0111i\u1ec7n tr\u1edf R1 v\u00e0 R2.<\/p>\n<p dir=\"ltr\">A. rt\u0111 = 10, r1 = 4V, r2 = 6 \u03a9<\/p>\n<p dir=\"ltr\">B. RT\u0111 = 10\u03a9, R1 = 6V, R2 = 4<\/p>\n<p dir=\"ltr\">C. RT\u0111 = 2,4\u03a9, R1 = 4V, R2 = 6<\/p>\n<p dir=\"ltr\">D. RT\u0111 = 2.4\u03a9, R1 = 6V, R2 = 4<\/p>\n<p dir=\"ltr\">B\u00e0i h\u1ecdc 4: Cung c\u1ea5p cho m\u1ea1ch v\u1edbi s\u01a1 \u0111\u1ed3 nh\u01b0 h\u00ecnh d\u01b0\u1edbi \u0111\u00e2y:<\/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\/dinh-luat-om-7.png\" alt=\"\" width=\"400\" height=\"232\"><\/p>\n<p dir=\"ltr\">Trong \u0111\u00f3 c\u00e1c \u0111i\u1ec7n tr\u1edf R1 = 14, R2 = 8, R3 = 24. D\u00f2ng \u0111i\u1ec7n \u0111i qua R1 c\u00f3 c\u01b0\u1eddng \u0111\u1ed9 I1 = 0,4a. T\u00ednh to\u00e1n c\u01b0\u1eddng \u0111\u1ed9 I2, I3 t\u01b0\u01a1ng \u1ee9ng v\u1edbi c\u00e1c \u0111i\u1ec7n tr\u1edf R2 v\u00e0 R3?<\/p>\n<p dir=\"ltr\">A. I2 = 0,1a; I3 = 0,3a<\/p>\n<p dir=\"ltr\">B. i2 = 3a; I3 = 1a<\/p>\n<p dir=\"ltr\">C. I2 = 0,1a; I3 = 0,1a<\/p>\n<p dir=\"ltr\">D. i2 = 0,3a; I3 = 0,1a<\/p>\n<p dir=\"ltr\">B\u00e0i 5: Cung c\u1ea5p cho m\u1ea1ch nh\u01b0 \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb nh\u01b0 sau:<\/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\/dinh-luat-om-8.png\" alt=\"\" width=\"400\" height=\"236\"><\/p>\n<p dir=\"ltr\">Bao g\u1ed3m \u0111i\u1ec7n tr\u1edf R1 = 9\u03a9, R2 = 15\u03a9, R3 = 10\u03a9. D\u00f2ng \u0111i\u1ec7n \u0111i qua R3 c\u00f3 c\u01b0\u1eddng \u0111\u1ed9 i3 = 0,3a. T\u00ednh to\u00e1n \u0111i\u1ec7n \u00e1p u gi\u1eefa hai \u0111\u1ea7u c\u1ee7a m\u1ea1ch AB.<\/p>\n<p dir=\"ltr\">A. 6.5V <\/p>\n<p dir=\"ltr\">B. 2,5V <\/p>\n<p dir=\"ltr\">C. 7,5V <\/p>\n<p dir=\"ltr\">D. 5,5V<\/p>\n<p dir=\"ltr\">Tr\u1ea3 l\u1eddi:<\/p>\n<p dir=\"ltr\">B\u00e0i 1: d<\/p>\n<p dir=\"ltr\">B\u00e0i 2: b<\/p>\n<p dir=\"ltr\">B\u00e0i 3: a<\/p>\n<p dir=\"ltr\">B\u00e0i 4: d<\/p>\n<p dir=\"ltr\">B\u00e0i 5: c<\/p>\n<p dir=\"ltr\">Tr\u00ean \u0111\u00e2y l\u00e0 m\u1ed9t b\u00e0i vi\u1ebft t\u00f3m t\u1eaft t\u1ea5t c\u1ea3 c\u00e1c l\u00fd thuy\u1ebft v\u1ec1 lu\u1eadt \u00f4m m\u00e0 h\u1ecd s\u1ebd h\u1ecdc trong v\u1eadt l\u00fd. Hy v\u1ecdng, th\u00f4ng qua b\u00e0i vi\u1ebft tr\u00ean, h\u1ecd \u0111\u00e3 c\u00f3 th\u1ec3 n\u1eafm b\u1eaft l\u00fd thuy\u1ebft v\u00e0 \u00e1p d\u1ee5ng r\u1ea5t nhi\u1ec1u trong c\u00e1c b\u00e0i t\u1eadp. C\u1ea3m \u01a1n b\u1ea1n \u0111\u00e3 xem v\u00e0 \u0111\u1ecdc b\u00e0i b\u00e1o.<\/p>\n<\/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 b\u00e0i vi\u1ebft tr\u01b0\u1edbc, h\u1ecd \u0111\u00e3 \u0111\u01b0\u1ee3c bi\u1ebft v\u1ec1 s\u1ef1 kh\u00e1ng c\u1ef1 c\u1ee7a nh\u1ea1c tr\u01b0\u1edfng v\u00e0 \u0111\u01b0\u1ee3c t\u00ecm hi\u1ec3u ng\u1eafn g\u1ecdn v\u1ec1 lu\u1eadt \u00f4m. Tuy nhi\u00ean, \u0111\u1ec3 hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 kh\u00e1i ni\u1ec7m \u00f4m l\u00e0 g\u00ec? C\u00f4ng th\u1ee9c t\u00ednh to\u00e1n nh\u01b0 th\u1ebf n\u00e0o? Vi\u1ec7c \u00e1p d\u1ee5ng Lu\u1eadt Hug? B\u00e0i vi\u1ebft h\u00f4m nay s\u1ebd gi\u00fap b\u1ea1n&#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-19916","post","type-post","status-publish","format-standard","hentry","category-kien-thuc"],"_links":{"self":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/19916","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=19916"}],"version-history":[{"count":2,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/19916\/revisions"}],"predecessor-version":[{"id":24803,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/19916\/revisions\/24803"}],"wp:attachment":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/media?parent=19916"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/categories?post=19916"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/tags?post=19916"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}