B\u00e0i t\u1eadp tr\u1eafc nghi\u1ec7m V\u1eadt L\u00ed 12: M\u1ea1ch c\u00f3 R, L, C m\u1eafc n\u1ed1i ti\u1ebfp (ph\u1ea7n 3)<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/lop12.edu.vn\/bai-tap-trac-nghiem-vat-li-12-mach-co-r-l-c-mac-noi-tiep-phan-3\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"B\u00e0i t\u1eadp tr\u1eafc nghi\u1ec7m V\u1eadt L\u00ed 12: M\u1ea1ch c\u00f3 R, L, C m\u1eafc n\u1ed1i ti\u1ebfp (ph\u1ea7n 3)\" \/>\n<meta property=\"og:description\" content=\"C\u00e2u 15:\u00a0\u0110\u1eb7t v\u00e0o hai \u0111\u1ea7u \u0111o\u1ea1n m\u1ea1ch c\u00f3 R, L, C m\u1eafc n\u1ed1i ti\u1ebfp m\u1ed9t \u0111i\u1ec7n \u00e1p xoay chi\u1ec1u c\u00f3 bi\u1ec3u th\u1ee9c u=135\u221a2 cos100\u03c0t (V). 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{"id":26184,"date":"2018-04-10T16:12:13","date_gmt":"2018-04-10T09:12:13","guid":{"rendered":"https:\/\/lop12.edu.vn\/?p=26184"},"modified":"2018-04-10T16:12:13","modified_gmt":"2018-04-10T09:12:13","slug":"bai-tap-trac-nghiem-vat-li-12-mach-co-r-l-c-mac-noi-tiep-phan-3","status":"publish","type":"post","link":"https:\/\/lop12.edu.vn\/bai-tap-trac-nghiem-vat-li-12-mach-co-r-l-c-mac-noi-tiep-phan-3\/","title":{"rendered":"B\u00e0i t\u1eadp tr\u1eafc nghi\u1ec7m V\u1eadt L\u00ed 12: M\u1ea1ch c\u00f3 R, L, C m\u1eafc n\u1ed1i ti\u1ebfp (ph\u1ea7n 3)"},"content":{"rendered":"

C\u00e2u 15:<\/b>\u00a0\u0110\u1eb7t v\u00e0o hai \u0111\u1ea7u \u0111o\u1ea1n m\u1ea1ch c\u00f3 R, L, C m\u1eafc n\u1ed1i ti\u1ebfp m\u1ed9t \u0111i\u1ec7n \u00e1p xoay chi\u1ec1u c\u00f3 bi\u1ec3u th\u1ee9c u=135\u221a2 cos100\u03c0t (V). C\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n ch\u1ea1y trong m\u1ea1ch c\u00f3 bi\u1ec3u th\u1ee9c<\/p>\n

$\"\"$ <\/p>\n

\u0110i\u1ec7n tr\u1edf c\u1ee7a m\u1ea1ch \u0111i\u1ec7n c\u00f3 gi\u00e1 tr\u1ecb b\u1eb1ng<\/p>\n

A. 45 \u03a9 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0B. 45\u221a2 \u03a9<\/p>\n

C. 22,5 \u03a9 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0D. 22,5\u221a3 \u03a9<\/p>\n

C\u00e2u 16:<\/b><\/p>\n

$\"\"$ <\/p>\n

\u0110i\u1ec7n tr\u1edf R c\u00f3 gi\u00e1 tr\u1ecb l\u00e0<\/p>\n

A. 100 \u03a9 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0B. 100\u221a2 \u03a9<\/p>\n

C. 100\u221a3 \u03a9 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0D. 200 \u03a9<\/p>\n

C\u00e2u 17:<\/b>\u00a0L\u1ea7n l\u01b0\u1ee3t m\u1eafc \u0111i\u1ec7n tr\u1edf R, cu\u1ed9n c\u1ea3m thu\u1ea7n c\u00f3 \u0111\u1ed9 t\u1ef1 c\u1ea3m L, t\u1ee5 \u0111i\u1ec7n c\u00f3 \u0111i\u1ec7n dung C v\u00e0o \u0111i\u1ec7n \u00e1p xoay chi\u1ec1u u=U_{o<\/sub>cos\u03c9t th\u00ec c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n hi\u1ec7u d\u1ee5ng qua ch\u00fang l\u1ea7n l\u01b0\u1ee3t l\u00e0 4 A; 6 A; 2 A. N\u1ebfu m\u1eafc n\u1ed1i ti\u1ebfp c\u00e1c ph\u1ea7n t\u1eed tr\u00ean v\u00e0o \u0111i\u1ec7n \u00e1p n\u00e0y th\u00ec c\u01b0\u1eddng \u0111\u1ed9 hi\u1ec7u d\u1ee5ng c\u1ee7a d\u00f2ng \u0111i\u1ec7n qua m\u1ea1ch l\u00e0<\/p>\n}

A. 12 A \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0B. 2,4 A \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0C. 4 A \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0D. 6 A<\/p>\n

C\u00e2u 18:<\/b>\u00a0M\u1ed9t \u0111o\u1ea1n m\u1ea1ch c\u00f3 R, L, C m\u1eafc n\u1ed1i ti\u1ebfp, cu\u1ed9n d\u00e2y thu\u1ea7n c\u1ea3m L v\u00e0 \u0111i\u1ec7n tr\u1edf thu\u1ea7n R kh\u00f4ng thay \u0111\u1ed5i. \u0110i\u1ec7n \u00e1p gi\u1eefa hai \u0111\u1ea7u \u0111o\u1ea1n m\u1ea1ch l\u00e0 u=U_{o<\/sub>\u00a0cos\u03c9t v\u1edbi U_{o<\/sub>\u00a0v\u00e0 \u03c9 kh\u00f4ng \u0111\u1ed5i. Khi t\u1ee5 \u0111i\u1ec7n c\u00f3 dung kh\u00e1ng 74 \u03a9 ho\u1eb7c 46 \u03a9 th\u00ec c\u01b0\u1eddng \u0111\u1ed9 hi\u1ec7u d\u1ee5ng c\u1ee7a d\u00f2ng \u0111i\u1ec7n qua R c\u00f3 gi\u00e1 tr\u1ecb b\u1eb1ng nhau. \u0110\u1ec3 c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n hi\u1ec7u d\u1ee5ng qua R \u0111\u1ea1t c\u1ef1c \u0111\u1ea1i th\u00ec dung kh\u00e1ng c\u1ee7a t\u1ee5 \u0111i\u1ec7n ph\u1ea3i c\u00f3 gi\u00e1 tr\u1ecb<\/p>\n}}

A. 40 \u03a9 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0B. 50 \u03a9 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 C. 60 \u03a9 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0D. 70 \u03a9<\/p>\n

C\u00e2u 19:<\/b>\u00a0M\u1ed9t \u0111o\u1ea1n m\u1ea1ch g\u1ed3m R = 20 \u03a9 m\u1eafc n\u1ed1i ti\u1ebfp v\u1edbi m\u1ed9t cu\u1ed9n d\u00e2y. \u0110\u1eb7t v\u00e0o hai \u0111\u1ea7u \u0111o\u1ea1n m\u1ea1ch \u0111i\u1ec7n \u00e1p xoay chi\u1ec1u u=200\u221a2 cos100\u03c0t (V). \u0110i\u1ec7n \u00e1p hi\u1ec7u d\u1ee5ng gi\u1eefa hai \u0111\u1ea7u \u0111i\u1ec7n tr\u1edf v\u00e0 gi\u1eefa hai \u0111\u1ea7u cu\u1ed9n d\u00e2y l\u1ea7n l\u01b0\u1ee3t l\u00e0 60 V v\u00e0 160 V. D\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua m\u1ea1ch c\u00f3 c\u01b0\u1eddng \u0111\u1ed9 hi\u1ec7u d\u1ee5ng l\u00e0 3 A. \u0110i\u1ec7n tr\u1edf thu\u1ea7n v\u00e0 \u0111\u1ed9 t\u1ef1 c\u1ea3m c\u1ee7a cu\u1ed9n d\u00e2y l\u00e0<\/p>\n

A. 40 \u03a9 v\u00e0 0,21 H \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0B. 30 \u03a9 v\u00e0 0,14 H<\/p>\n

C. 30 \u03a9 v\u00e0 0,28 H \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0D. 40 \u03a9 v\u00e0 0,14 H<\/p>\n

C\u00e2u 20:<\/b>\u00a0\u0110\u1eb7t v\u00e0o hai \u0111\u1ea7u \u0111o\u1ea1n m\u1ea1ch c\u00f3 R, L, C m\u1eafc n\u1ed1i ti\u1ebfp n\u1ed9t \u0111i\u1ec7n \u00e1p xoay chi\u1ec1u u=U_{o<\/sub>\u00a0cos\u03c9t. K\u00ed hi\u1ec7u U_{R<\/sub>,U_{L<\/sub>,U_{C<\/sub>\u00a0t\u01b0\u01a1ng \u1ee9ng l\u00e0 \u0111i\u1ec7n \u00e1p hi\u1ec7u d\u1ee5ng gi\u1eefa hai \u0111\u1ea7u \u0111i\u1ec7n tr\u1edf thu\u1ea7n R, cu\u1ed9n c\u1ea3m thu\u1ea7n L v\u00e0 t\u1ee5 \u0111i\u1ec7n C. N\u1ebfu U_{L<\/sub>=2U_{C<\/sub>=2\u221a3 U_{R<\/sub>\u00a0th\u00ec c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n qua \u0111o\u1ea1n m\u1ea1ch<\/p>\n}}}}}}}

$\"\"$ <\/p>\n

H\u01b0\u1edbng d\u1eabn gi\u1ea3i v\u00e0 \u0111\u00e1p \u00e1n<\/b><\/p>\n\n\n\n\n
C\u00e2u<\/td>\n 15<\/td>\n 16<\/td>\n 17<\/td>\n 18<\/td>\n 19<\/td>\n 20<\/td>\n<\/tr>\n
\u0110\u00e1p \u00e1n<\/td>\n A<\/td>\n C<\/td>\n B<\/td>\n C<\/td>\n B<\/td>\n A<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\nC\u00e2u 15:<\/b>\u00a0A<\/p>\n
$\"\"$ <\/p>\n
C\u00e2u 16:<\/b>\u00a0C<\/p>\n
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C\u00e2u 17:<\/b>\u00a0B<\/p>\n
$\"\"$ <\/p>\n
C\u00e2u 18:<\/b>\u00a0C<\/p>\n
$\"\"$ <\/p>\n
C\u00e2u 19:<\/b>\u00a0B<\/p>\n
$\"\"$ <\/p>\n
C\u00e2u 20:<\/b>\u00a0A<\/p>\n
$\"\"$ <\/p>\n","protected":false},"excerpt":{"rendered":"
C\u00e2u 15:\u00a0\u0110\u1eb7t v\u00e0o hai \u0111\u1ea7u \u0111o\u1ea1n m\u1ea1ch c\u00f3 R, L, C m\u1eafc n\u1ed1i ti\u1ebfp m\u1ed9t \u0111i\u1ec7n \u00e1p xoay chi\u1ec1u c\u00f3 bi\u1ec3u th\u1ee9c u=135\u221a2 cos100\u03c0t (V). C\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n ch\u1ea1y trong m\u1ea1ch c\u00f3 bi\u1ec3u th\u1ee9c \u0110i\u1ec7n tr\u1edf c\u1ee7a m\u1ea1ch \u0111i\u1ec7n c\u00f3 gi\u00e1 tr\u1ecb b\u1eb1ng A. 45 \u03a9 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0B. 45\u221a2 \u03a9 C. 22,5 \u03a9 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0D. 22,5\u221a3 […]<\/p>\n","protected":false},"author":3,"featured_media":26185,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false,"tdm_status":"","tdm_grid_status":""},"categories":[158],"tags":[1445,1444],"yoast_head":"\nB\u00e0i t\u1eadp tr\u1eafc nghi\u1ec7m V\u1eadt L\u00ed 12: M\u1ea1ch c\u00f3 R, L, C m\u1eafc n\u1ed1i ti\u1ebfp (ph\u1ea7n 3)<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/lop12.edu.vn\/bai-tap-trac-nghiem-vat-li-12-mach-co-r-l-c-mac-noi-tiep-phan-3\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"B\u00e0i t\u1eadp tr\u1eafc nghi\u1ec7m V\u1eadt L\u00ed 12: M\u1ea1ch c\u00f3 R, L, C m\u1eafc n\u1ed1i ti\u1ebfp (ph\u1ea7n 3)\" \/>\n<meta property=\"og:description\" content=\"C\u00e2u 15:\u00a0\u0110\u1eb7t v\u00e0o hai \u0111\u1ea7u \u0111o\u1ea1n m\u1ea1ch c\u00f3 R, L, C m\u1eafc n\u1ed1i ti\u1ebfp m\u1ed9t \u0111i\u1ec7n \u00e1p xoay chi\u1ec1u c\u00f3 bi\u1ec3u th\u1ee9c u=135\u221a2 cos100\u03c0t (V). 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