{"id":26184,"date":"2022-07-25T17:00:11","date_gmt":"2022-07-25T10:00:11","guid":{"rendered":"https:\/\/hocvienit.vn\/?p=26184"},"modified":"2024-07-02T02:30:25","modified_gmt":"2024-07-01T19:30:25","slug":"giao-trinh-ve-dien-tro-dien-tro-cua-day-dan","status":"publish","type":"post","link":"https:\/\/hocvienit.vn\/?p=26184","title":{"rendered":"Gi\u00e1o tr\u00ecnh v\u1ec1 \u0111i\u1ec7n tr\u1edf – \u0110i\u1ec7n tr\u1edf c\u1ee7a d\u00e2y d\u1eabn"},"content":{"rendered":"

\u1ede b\u00e0i vi\u1ebft tr\u01b0\u1edbc, HLV. Tr\u01b0\u01a1ng V\u0103n Ng\u1ecdc \u0111\u00e3 chia s\u1ebb <\/span>c\u01a1 b\u1ea3n v\u1ec1 \u0111i\u1ec7n tr\u1edf<\/a><\/strong>. Trong b\u00e0i vi\u1ebft n\u00e0y, ch\u00fang ta s\u1ebd ti\u1ebfp t\u1ee5c c\u00f9ng HLV. Tr\u01b0\u01a1ng V\u0103n Ng\u1ecdc nghi\u00ean c\u1ee9u v\u1ec1 \u0111i\u1ec7n tr\u1edf c\u1ee7a d\u00e2y d\u1eabn<\/strong> nh\u00e9.<\/span><\/span><\/p>\n

\"Gi\u00e1o
Gi\u00e1o tr\u00ecnh v\u1ec1 \u0111i\u1ec7n tr\u1edf – \u0110i\u1ec7n tr\u1edf c\u1ee7a d\u00e2y d\u1eabn<\/span><\/figcaption><\/figure>\n

\u0110i\u1ec7n tr\u1edf c\u1ee7a d\u00e2y d\u1eabn l\u00e0 g\u00ec?<\/strong><\/span><\/h3>\n

\u0110i\u1ec7n tr\u1edf c\u1ee7a d\u00e2y d\u1eabn l\u00e0 m\u1ee9c \u0111\u1ed9 c\u1ea3n tr\u1edf d\u00f2ng \u0111i\u1ec7n c\u1ee7a d\u00e2y d\u1eabn. \u0110i\u1ec7n tr\u1edf c\u00e0ng l\u1edbn th\u00ec d\u00f2ng \u0111i\u1ec7n \u0111i qua c\u00e0ng nh\u1ecf v\u00e0 ng\u01b0\u1ee3c l\u1ea1i. K\u00fd hi\u1ec7u c\u1ee7a \u0111i\u1ec7n tr\u1edf l\u00e0 R. \u0110\u01a1n v\u1ecb l\u00e0 \u00d4m (\u03a9).<\/span><\/p>\n

1k\u03a9 = 1000\u03a9<\/span><\/p>\n

1M\u03a9 = 10^6\u03a9<\/span><\/p>\n

K\u00fd hi\u1ec7u \u0111i\u1ec7n tr\u1edf c\u1ee7a d\u00e2y d\u1eabn tr\u00ean s\u01a1 \u0111\u1ed3 m\u1ea1ch \u0111i\u1ec7n l\u00e0:<\/span><\/p>\n

\"K\u00fd
K\u00fd hi\u1ec7u \u0111i\u1ec7n tr\u1edf c\u1ee7a d\u00e2y d\u1eabn tr\u00ean s\u01a1 \u0111\u1ed3 m\u1ea1ch \u0111i\u1ec7n<\/span><\/figcaption><\/figure>\n

Xem th\u00eam: <\/span>\u0110i\u1ec7n tr\u1edf c\u1ee7a d\u00e2y d\u1eabn ph\u1ee5 thu\u1ed9c v\u00e0o nh\u1eefng y\u1ebfu t\u1ed1 n\u00e0o?<\/span><\/a><\/span><\/p><\/blockquote>\n

C\u00f4ng th\u1ee9c t\u00ednh \u0111i\u1ec7n tr\u1edf d\u00e2y d\u1eabn<\/strong><\/span><\/h2>\n

C\u00f4ng th\u1ee9c t\u00ednh \u0111i\u1ec7n tr\u1edf c\u1ee7a d\u00e2y d\u1eabn nh\u01b0 sau:<\/span><\/p>\n

R = \u03c1.L\/S<\/strong><\/span><\/p>\n

Trong \u0111\u00f3:<\/span><\/p>\n

R l\u00e0 \u0111i\u1ec7n tr\u1edf (\u0110\u01a1n v\u1ecb: Ohm).<\/span><\/p>\n

\u03c1 l\u00e0 \u0111i\u1ec7n tr\u1edf su\u1ea5t ph\u1ee5 thu\u1ed9c v\u00e0o ch\u1ea5t li\u1ec7u.<\/span><\/p>\n

L l\u00e0 chi\u1ec1u d\u00e0i d\u00e2y d\u1eabn.<\/span><\/p>\n

S l\u00e0 ti\u1ebft di\u1ec7n c\u1ee7a d\u00e2y d\u1eabn.<\/span><\/p>\n

T\u1eeb c\u00f4ng th\u1ee9c tr\u00ean, ta c\u00f3 th\u1ec3 suy ra c\u00f4ng th\u1ee9c t\u00ednh c\u00e1c th\u00e0nh ph\u1ea7n c\u1ee7a d\u00e2y d\u1eabn l\u00e0:<\/span><\/p>\n

C\u00f4ng th\u1ee9c t\u00ednh \u0111i\u1ec7n tr\u1edf su\u1ea5t: \u03c1 = (R.S)\/l<\/strong><\/span><\/p>\n

C\u00f4ng th\u1ee9c t\u00ednh chi\u1ec1u d\u00e0i d\u00e2y d\u1eabn: l = (R.S)\/\u03c1<\/strong><\/span><\/p>\n

C\u00f4ng th\u1ee9c t\u00ednh ti\u1ebft di\u1ec7n d\u00e2y d\u1eabn: S = \u03c1.(l\/R)<\/strong><\/span><\/p>\n

Tr\u00ean \u0111\u00e2y l\u00e0 chia s\u1ebb c\u1ee7a hu\u1ea5n luy\u1ec7n vi\u00ean Tr\u01b0\u01a1ng V\u0103n Ng\u1ecdc v\u1ec1 \u0111i\u1ec7n tr\u1edf c\u1ee7a d\u00e2y d\u1eabn. N\u1ebfu c\u00f3 b\u1ea5t c\u1ee9 th\u1eafc m\u1eafc n\u00e0o th\u00ec h\u00e3y \u0111\u1ec3 l\u1ea1i b\u00ecnh lu\u1eadn ngay d\u01b0\u1edbi b\u00e0i vi\u1ebft n\u00e0y ho\u1eb7c inbox tr\u1ef1c ti\u1ebfp cho HOCVIENiT.vn \u0111\u1ec3 \u0111\u01b0\u1ee3c gi\u1ea3i \u0111\u00e1p t\u1ed1t nh\u1ea5t. Ch\u00fac b\u1ea1n th\u00e0nh c\u00f4ng!<\/span><\/p>\n

M\u1ecdi chi ti\u1ebft xin vui l\u00f2ng li\u00ean h\u1ec7:
\n<\/i>C\u00d4NG TY C\u1ed4 PH\u1ea6N H\u1eccC VI\u1ec6N IT
\n<\/strong>MST: 0108733789
\n<\/strong>T\u1ed5ng \u0111\u00e0i h\u1ed7 tr\u1ee3: 024 3566 8686 \u2013 Hotline: 0981 223 001
\n<\/strong>Facebook:<\/strong>\u00a0www.fb.com\/hocvienit<\/a>
\n\u0110\u0103ng k\u00fd k\u00eanh Youtube \u0111\u1ec3 theo d\u00f5i c\u00e1c b\u00e0i h\u1ecdc c\u1ee7a Hu\u1ea5n luy\u1ec7n vi\u00ean t\u1ed1t nh\u1ea5t:<\/strong>\u00a0http:\/\/bit.ly\/Youtube_HOCVIENiT<\/a>
\nH\u1ec7 th\u1ed1ng c\u01a1 s\u1edf \u0111\u00e0o t\u1ea1o:\u00a0<\/b>https:\/\/hocvienit.vn\/lien-he\/<\/a>
\nH\u1ecdc vi\u1ec7n IT.vn \u2013 Truy\u1ec1n ngh\u1ec1 th\u1ef1c t\u1ebf c\u00f9ng b\u1ea1n \u0111\u1ebfn th\u00e0nh c\u00f4ng!\u00a0<\/i><\/strong><\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

\u1ede b\u00e0i vi\u1ebft tr\u01b0\u1edbc, HLV. Tr\u01b0\u01a1ng V\u0103n Ng\u1ecdc \u0111\u00e3 chia s\u1ebb c\u01a1 b\u1ea3n v\u1ec1 \u0111i\u1ec7n tr\u1edf. Trong b\u00e0i vi\u1ebft n\u00e0y, ch\u00fang ta s\u1ebd ti\u1ebfp t\u1ee5c c\u00f9ng HLV. Tr\u01b0\u01a1ng V\u0103n Ng\u1ecdc nghi\u00ean c\u1ee9u v\u1ec1 \u0111i\u1ec7n tr\u1edf c\u1ee7a d\u00e2y d\u1eabn nh\u00e9.<\/p>\n","protected":false},"author":95,"featured_media":26185,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[95,94],"tags":[245],"_links":{"self":[{"href":"https:\/\/hocvienit.vn\/index.php?rest_route=\/wp\/v2\/posts\/26184"}],"collection":[{"href":"https:\/\/hocvienit.vn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hocvienit.vn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hocvienit.vn\/index.php?rest_route=\/wp\/v2\/users\/95"}],"replies":[{"embeddable":true,"href":"https:\/\/hocvienit.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=26184"}],"version-history":[{"count":0,"href":"https:\/\/hocvienit.vn\/index.php?rest_route=\/wp\/v2\/posts\/26184\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hocvienit.vn\/index.php?rest_route=\/wp\/v2\/media\/26185"}],"wp:attachment":[{"href":"https:\/\/hocvienit.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=26184"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hocvienit.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=26184"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hocvienit.vn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=26184"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}