Ghi ch\u00fa: T\u00e0i li\u1ec7u tr\u00edch d\u1eabn<\/p>\n\n\n\n
Ch\u00fang ta nh\u00ecn th\u1ea5y r\u1ea5t nhi\u1ec1u d\u00e2y \u0111i\u1ec7n, m\u1ea1ch \u0111i\u1ec7n trong cu\u1ed9c s\u1ed1ng. Th\u1ebf nh\u01b0ng, c\u1ea5u t\u1ea1o c\u1ee7a nh\u1eefng m\u1ea1ch \u0111i\u1ec7n n\u00e0y nh\u01b0 th\u1ebf n\u00e0o? H\u1eb3n s\u1ebd c\u00f3 nhi\u1ec1u ng\u01b0\u1eddi ch\u01b0a bi\u1ebft \u0111\u1ebfn. M\u1ea1ch \u0111i\u1ec7n c\u00f3 th\u1ec3 l\u1eafp \u0111\u01b0\u1ee3c theo nh\u1eefng ki\u1ec3u g\u00ec? Ki\u1ebfn th\u1ee9c v\u1eadt l\u00fd 9 s\u1ebd gi\u1ea3i \u0111\u00e1p cho c\u00e1c em \u0111i\u1ec1u n\u00e0y. B\u00e0i vi\u1ebft ng\u00e0y h\u00f4m nay, ch\u00fang ta s\u1ebd c\u00f9ng nhau t\u00ecm hi\u1ec3u v\u1ec1 \u0111o\u1ea1n m\u1ea1ch n\u1ed1i ti\u1ebfp nh\u00e9! \u0110\u00e2y l\u00e0 ki\u1ec3u m\u1ea1ch \u0111i\u1ec7n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ea5t nhi\u1ec1u trong cu\u1ed9c s\u1ed1ng c\u1ee7a ch\u00fang ta.<\/p>\n\n\n\n
M\u1ea1ch \u0111i\u1ec7n l\u00e0 g\u00ec?<\/p>\n\n\n\n
Tr\u01b0\u1edbc khi \u0111\u1ebfn v\u1edbi c\u00e1c ki\u1ec3u m\u1ea1ch \u0111i\u1ec7n, ch\u00fang ta c\u1ea7n c\u00f3 ki\u1ebfn th\u1ee9c chung v\u1ec1 m\u1ea1ch \u0111i\u1ec7n. \u1ede ph\u1ea7n n\u00e0y c\u1ee7a b\u00e0i vi\u1ebft, ch\u00fang ta s\u1ebd gi\u1ea3i \u0111\u00e1p, m\u1ea1ch \u0111i\u1ec7n l\u00e0 g\u00ec? M\u1ea1ch \u0111i\u1ec7n \u0111\u01b0\u1ee3c hi\u1ec3u l\u00e0 t\u1eadp h\u1ee3p c\u00e1c linh ki\u1ec7n hay ph\u1ea7n t\u1eed \u0111i\u1ec7n \u0111\u01b0\u1ee3c n\u1ed1i v\u1edbi nhau th\u00f4ng qua d\u00e2y d\u1eabn. Khi m\u1ea1ch \u0111i\u1ec7n \u0111\u01b0\u1ee3c n\u1ed1i v\u1edbi ngu\u1ed3n ch\u00fang ta n\u00f3i \u0111\u00e2y l\u00e0 m\u1ea1ch \u0111i\u1ec7n k\u00edn. N\u1ebfu \u0111\u1ec3 t\u00ecm hi\u1ec3u v\u1ec1 c\u00e1c linh ki\u1ec7n, hay ph\u1ea7n t\u1eed \u0111i\u1ec7n th\u00ec s\u1ebd c\u00f3 r\u1ea5t nhi\u1ec1u. Trong ch\u01b0\u01a1ng tr\u00ecnh v\u1eadt l\u00fd c\u1ee7a c\u00e1c em, ch\u00fang ta \u0111\u01b0\u1ee3c bi\u1ebft \u00edt h\u01a1n. \u0110\u00f3 ch\u00ednh l\u00e0 b\u00f3ng \u0111\u00e8n, c\u00f4ng t\u1eafc \u0111i\u1ec7n, ngu\u1ed3n \u0111i\u1ec7n, \u0111i\u1ec7n tr\u1edf R,\u2026<\/p>\n\n\n\n
S\u01a1 \u0111\u1ed3 \u0111o\u1ea1n m\u1ea1ch c\u00f3 hai b\u00f3ng \u0111\u00e8n m\u1eafc n\u1ed1i ti\u1ebfp<\/p>\n\n\n\n
\u0110\u00e2y ch\u00ednh l\u00e0 nh\u1eefng linh ki\u1ec7n, ph\u1ea7n t\u1eed \u0111i\u1ec7n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng nhi\u1ec1u nh\u1ea5t trong c\u00e1c b\u00e0i h\u1ecdc tr\u00ean l\u1edbp. M\u1ea1ch \u0111i\u1ec7n ch\u00fang ta \u0111\u01b0\u1ee3c t\u00ecm hi\u1ec3u trong m\u00f4n v\u1eadt l\u00fd 9 c\u0169ng l\u00e0 m\u1ea1ch \u0111i\u1ec7n \u0111\u01a1n gi\u1ea3n. M\u1ea1ch \u0111i\u1ec7n c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c m\u1eafc theo nhi\u1ec1u ki\u1ec3u kh\u00e1c nhau. \u0110o\u1ea1n m\u1ea1ch n\u1ed1i ti\u1ebfp ch\u1ec9 l\u00e0 m\u1ed9t lo\u1ea1i r\u1ea5t \u0111\u01a1n gi\u1ea3n trong c\u00e1c lo\u1ea1i m\u1ea1ch \u0111i\u1ec7n. Tuy nhi\u00ean, \u0111\u00e2y c\u0169ng ch\u00ednh l\u00e0 ki\u1ec3u m\u1ea1ch \u0111i\u1ec7n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng nhi\u1ec1u trong cu\u1ed9c s\u1ed1ng th\u01b0\u1eddng ng\u00e0y.<\/p>\n\n\n\n
C\u00e1c em c\u00f3 th\u1ec3 l\u00e0m th\u00ed nghi\u1ec7m l\u1eafp m\u1ea1ch \u0111i\u1ec7n c\u01a1 b\u1ea3n tr\u00ean l\u1edbp. Th\u1ea7y c\u00f4 s\u1ebd tr\u1ef1c ti\u1ebfp h\u01b0\u1edbng d\u1eabn c\u00e1c em l\u00e0m th\u00ed nghi\u1ec7m n\u00e0y. Tuy nhi\u00ean, ngu\u1ed3n \u0111i\u1ec7n s\u1ebd \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng V\u00f4n c\u1ef1c nh\u1ecf \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o an to\u00e0n cho c\u00e1c em. Trong c\u00e1c \u0111\u1ec1 b\u00e0i, ng\u01b0\u1eddi ta s\u1ebd mi\u00eau t\u1ea3 m\u1ea1ch \u0111i\u1ec7n \u0111\u1ec3 c\u00e1c em th\u1ef1c hi\u1ec7n v\u1ebd v\u00e0 l\u00e0m b\u00e0i. Do \u0111\u00f3 c\u00e1c em n\u00ean nh\u1edb k\u00ed hi\u1ec7u v\u1ec1 c\u00e1c ph\u1ea7n t\u1eed c\u00f3 trong m\u1ea1ch \u0111i\u1ec7n \u0111\u1ec3 l\u00e0m b\u00e0i d\u1ec5 d\u00e0ng h\u01a1n.<\/p>\n\n\n\n
\u0110o\u1ea1n m\u1ea1ch n\u1ed1i ti\u1ebfp l\u00e0 g\u00ec?<\/p>\n\n\n\n
Sau khi t\u00ecm hi\u1ec3u qua v\u1ec1 m\u1ea1ch \u0111i\u1ec7n, ch\u00fang ta \u0111\u00e3 hi\u1ec3u h\u01a1n v\u1ec1 ch\u1ee7 \u0111\u1ec1 n\u00e0y. \u0110o\u1ea1n m\u1ea1ch n\u1ed1i ti\u1ebfp ch\u00ednh l\u00e0 m\u1ed9t trong nh\u1eefng ki\u1ec3u l\u1eafp m\u1ea1ch \u0111i\u1ec7n. \u0110o\u1ea1n m\u1ea1ch n\u00e0y s\u1ebd c\u00f3 nh\u1eefng thi\u1ebft b\u1ecb \u0111i\u1ec7n l\u1eafp n\u1ed1i ti\u1ebfp v\u1edbi nhau. Trong \u0111o\u1ea1n m\u1ea1ch th\u01b0\u1eddng ch\u1ec9 c\u00f3 m\u1ed9t \u0111\u01b0\u1eddng d\u00e2y d\u1eabn duy nh\u1ea5t. C\u00e1c linh ki\u1ec7n \u0111\u01b0\u1ee3c n\u1ed1i v\u1edbi nhau ch\u1ec9 b\u1eb1ng m\u1ed9t \u0111o\u1ea1n d\u00e2y d\u1eabn th\u1eb3ng. \u0110\u00e2y l\u00e0 lo\u1ea1i m\u1ea1ch \u0111i\u1ec7n d\u1ec5 d\u00e0ng l\u1eafp \u0111\u1eb7t nh\u1ea5t. Hai \u0111\u1ea7u d\u00e2y \u0111\u01b0\u1ee3c n\u1ed1i v\u1edbi ngu\u1ed3n. Tr\u00ean \u0111o\u1ea1n d\u00e2y \u0111\u00f3 s\u1ebd l\u00e0 nh\u1eefng thi\u1ebft b\u1ecb \u0111i\u1ec7n m\u1eafc n\u1ed1i ti\u1ebfp v\u1edbi nhau.<\/p>\n\n\n\n
Th\u00ed nghi\u1ec7m c\u00e1c em \u0111\u01b0\u1ee3c l\u00e0m t\u1ea1i l\u1edbp<\/p>\n\n\n\n
\u0110\u00fang nh\u01b0 t\u00ean g\u1ecdi, \u0111\u1eb7c \u0111i\u1ec3m l\u1eafp m\u1ea1ch \u0111i\u1ec7n n\u00e0y c\u0169ng nh\u01b0 v\u1eady. Tuy nhi\u00ean, trong \u0111\u1eddi s\u1ed1ng th\u01b0\u1eddng ng\u00e0y, ch\u00fang ta s\u1eed d\u1ee5ng r\u1ea5t nhi\u1ec1u ki\u1ec3u \u0111o\u1ea1n m\u1ea1ch. C\u00e1c em n\u00ean ph\u00e2n bi\u1ec7t c\u00e1c ki\u1ec3u \u0111o\u1ea1n m\u1ea1ch \u0111\u1ec3 \u00e1p d\u1ee5ng \u0111\u1eb7c \u0111i\u1ec3m cho \u0111\u00fang. V\u1edbi m\u1ed7i ki\u1ec3u \u0111o\u1ea1n m\u1ea1ch kh\u00e1c nhau s\u1ebd c\u00f3 nh\u1eefng \u0111\u1eb7c \u0111i\u1ec3m kh\u00e1c nhau. N\u1ebfu ch\u00fang ta kh\u00f4ng t\u00ecm hi\u1ec3u v\u1ec1 \u0111o\u1ea1n m\u1ea1ch n\u1ed1i ti\u1ebfp th\u00ec s\u1ebd kh\u00f3 bi\u1ebft \u0111\u1ebfn \u0111i\u1ec1u n\u00e0y.<\/p>\n\n\n\n
C\u00e1c em ho\u00e0n to\u00e0n c\u00f3 th\u1ec3 t\u1ef1 l\u1eafp ki\u1ec3u m\u1ea1ch \u0111i\u1ec7n n\u1ed1i ti\u1ebfp tr\u00ean l\u1edbp. Ngo\u00e0i ra, \u0111\u1ed1i v\u1edbi c\u00e1c em th\u00edch kh\u00e1m ph\u00e1, c\u0169ng c\u00f3 th\u1ec3 c\u00f9ng ng\u01b0\u1eddi l\u1edbn th\u1ef1c h\u00e0nh t\u1ea1i nh\u00e0. Tuy nhi\u00ean, ngu\u1ed3n \u0111i\u1ec7n c\u00e1c em s\u1eed d\u1ee5ng n\u00ean l\u00e0 ngu\u1ed3n \u0111i\u1ec7n nh\u1ecf. \u0110i\u1ec1u n\u00e0y s\u1ebd \u0111\u1ea3m b\u1ea3o an to\u00e0n cho c\u00e1c em trong qu\u00e1 tr\u00ecnh l\u1eafp m\u1ea1ch c\u0169ng nh\u01b0 th\u00ed nghi\u1ec7m. \u0110o\u1ea1n m\u1ea1ch n\u1ed1i ti\u1ebfp c\u00f3 nh\u1eefng \u0111\u1eb7c \u0111i\u1ec3m g\u00ec c\u1ea7n ch\u00fa \u00fd? Ch\u00fang ta c\u00f9ng t\u00ecm hi\u1ec3u ngay sau \u0111\u00e2y nh\u00e9!<\/p>\n\n\n\n
\u0110\u1eb7c \u0111i\u1ec3m c\u1ee7a \u0111o\u1ea1n m\u1ea1ch n\u1ed1i ti\u1ebfp<\/p>\n\n\n\n
Khi n\u00f3i \u0111\u1ebfn m\u1ed9t m\u1ea1ch \u0111i\u1ec7n, ch\u00fang ta th\u01b0\u1eddng s\u1ebd ch\u00fa \u00fd \u0111\u1ebfn c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n, hi\u1ec7u \u0111i\u1ec7n th\u1ebf. \u0110\u1ed1i v\u1edbi \u0111o\u1ea1n m\u1ea1ch n\u1ed1i ti\u1ebfp nh\u1eefng \u0111\u1eb7c \u0111i\u1ec3m n\u00e0y c\u1ee7a d\u00f2ng \u0111i\u1ec7n c\u0169ng c\u00f3 ph\u1ea7n kh\u00e1c.<\/p>\n\n\n\n
C\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n<\/p>\n\n\n\n
C\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n trong m\u1ea1ch \u0111i\u1ec7n n\u1ed1i ti\u1ebfp s\u1ebd l\u00e0 nh\u01b0 nhau \u1edf m\u1ecdi v\u1ecb tr\u00ed. Hay n\u00f3i \u0111\u01a1n gi\u1ea3n h\u01a1n, c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n c\u1ee7a \u0111o\u1ea1n m\u1ea1ch n\u00e0y b\u1eb1ng c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n \u0111i qua c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n. V\u00ed d\u1ee5 m\u1ea1ch \u0111i\u1ec7n \u0111ang c\u00f3 b\u00f3ng \u0111\u00e8n v\u00e0 \u0111i\u1ec7n tr\u1edf m\u1eafc n\u1ed1i ti\u1ebfp v\u1edbi nhau n\u1ed1i \u0111\u1ebfn ngu\u1ed3n. Ch\u00fang ta c\u00f3 th\u1ec3 suy ra c\u00f4ng th\u1ee9c: I = I \u0111\u00e8n = I \u0111i\u1ec7n tr\u1edf.<\/p>\n\n\n\n
\u1ee8ng d\u1ee5ng c\u1ee7a \u0111o\u1ea1n m\u1ea1ch trong cu\u1ed9c s\u1ed1ng<\/p>\n\n\n\n
Trong \u0111\u00f3 I ch\u00ednh l\u00e0 k\u00ed hi\u1ec7u c\u1ee7a c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n. Khi c\u00e1c em l\u1eafp m\u1ea1ch ho\u1eb7c l\u00e0m b\u00e0i t\u1eadp v\u1ec1 m\u1ea1ch \u0111i\u1ec7n, c\u00e1c em c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng \u0111i\u1ec1u n\u00e0y. \u0110\u1ec1 b\u00e0i c\u00f3 th\u1ec3 cho c\u00e1c em \u0111\u1ed9 l\u1edbn c\u1ee7a c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n, sau \u0111\u00f3 y\u00eau c\u1ea7u x\u00e1c \u0111\u1ecbnh t\u1ea1i c\u00e1c v\u1ecb tr\u00ed kh\u00e1c. C\u00e1c em ch\u1ec9 c\u1ea7n bi\u1ebft \u0111\u00e2y l\u00e0 \u0111o\u1ea1n m\u1ea1ch n\u1ed1i ti\u1ebfp th\u00ec c\u00f3 th\u1ec3 suy ra I t\u1ea1i m\u1ecdi \u0111i\u1ec3m l\u00e0 nh\u01b0 nhau.<\/p>\n\n\n\n
Hi\u1ec7u \u0111i\u1ec7n th\u1ebf<\/p>\n\n\n\n
B\u00ean c\u1ea1nh c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n ch\u00fang ta c\u00f2n x\u00e9t \u0111\u1ebfn hi\u1ec7u \u0111i\u1ec7n th\u1ebf. Trong tr\u01b0\u1eddng h\u1ee3p \u0111o\u1ea1n m\u1ea1ch n\u1ed1i ti\u1ebfp, hi\u1ec7u \u0111i\u1ec7n th\u1ebf c\u1ee7a m\u1ea1ch b\u1eb1ng t\u1ed5ng c\u00e1c hi\u1ec7u \u0111i\u1ec7n th\u1ebf. Hay n\u00f3i c\u00e1ch kh\u00e1c, Hi\u1ec7u \u0111i\u1ec7n th\u1ebf gi\u1eefa hai \u0111\u1ea7u \u0111o\u1ea1n m\u1ea1ch b\u1eb1ng t\u1ed5ng hai hi\u1ec7u \u0111i\u1ec7n th\u1ebf gi\u1eefa hai \u0111\u1ea7u m\u1ed7i \u0111i\u1ec7n tr\u1edf th\u00e0nh ph\u1ea7n.<\/p>\n\n\n\n
Ch\u00fang ta c\u00f3 th\u1ec3 d\u00f9ng ngay v\u00ed d\u1ee5 v\u1edbi \u0111o\u1ea1n m\u1ea1ch c\u00f3 \u0111\u00e8n v\u00e0 \u0111i\u1ec7n tr\u1edf m\u1eafc n\u1ed1i ti\u1ebfp ph\u00eda tr\u00ean. Hi\u1ec7u \u0111i\u1ec7n th\u1ebf c\u1ee7a \u0111o\u1ea1n m\u1ea1ch s\u1ebd b\u1eb1ng t\u1ed5ng hi\u1ec7u \u0111i\u1ec7n th\u1ebf \u0111i qua \u0111\u00e8n c\u1ed9ng v\u1edbi \u0111i\u1ec7n tr\u1edf. Ch\u00fang ta c\u00f3 th\u1ec3 suy ra c\u00f4ng th\u1ee9c nh\u01b0 sau: U = U \u0111\u00e8n + U \u0111i\u1ec7n tr\u1edf.<\/p>\n\n\n\n
\u0110\u00e2y ch\u00ednh l\u00e0 \u0111\u1eb7c \u0111i\u1ec3m c\u1ea7n nh\u1edb v\u1ec1 \u0111o\u1ea1n m\u1ea1ch n\u1ed1i ti\u1ebfp. C\u00e1c em n\u00ean ghi ch\u00e9p l\u1ea1i nh\u1eefng l\u00fd thuy\u1ebft n\u00e0y \u0111\u1ec3 c\u00f3 th\u1ec3 l\u00e0m b\u00e0i t\u1eadp ch\u00ednh x\u00e1c h\u01a1n. Ch\u1ec9 c\u1ea7n \u0111\u1ec1 b\u00e0i cho bi\u1ebft \u0111\u00e2y l\u00e0 \u0111o\u1ea1n m\u1ea1ch n\u1ed1i ti\u1ebfp l\u00e0 c\u00e1c em c\u00f3 th\u1ec3 d\u00f9ng.<\/p>\n\n\n\n
\u0110i\u1ec7n tr\u1edf t\u01b0\u01a1ng \u0111\u01b0\u01a1ng c\u1ee7a \u0111o\u1ea1n m\u1ea1ch n\u1ed1i ti\u1ebfp<\/p>\n\n\n\n
\u0110i\u1ec7n tr\u1edf t\u01b0\u01a1ng \u0111\u01b0\u01a1ng c\u1ee7a \u0111o\u1ea1n m\u1ea1ch n\u1ed1i ti\u1ebfp g\u1ed3m c\u00e1c \u0111i\u1ec7n tr\u1edf. M\u00e0 trong \u0111\u00f3 \u0111i\u1ec7n tr\u1edf c\u00f3 th\u1ec3 thay th\u1ebf cho \u0111o\u1ea1n m\u1ea1ch n\u00e0y. Sao cho v\u1edbi c\u00f9ng hi\u1ec7u \u0111i\u1ec7n th\u1ebf th\u00ec c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua \u0111o\u1ea1n m\u1ea1ch v\u1eabn c\u00f3 gi\u00e1 tr\u1ecb nh\u01b0 tr\u01b0\u1edbc. \u0110i\u1ec7n tr\u1edf t\u01b0\u01a1ng \u0111\u01b0\u01a1ng c\u1ee7a \u0111o\u1ea1n m\u1ea1ch b\u1eb1ng t\u1ed5ng hai \u0111i\u1ec7n tr\u1edf th\u00e0nh ph\u1ea7n.<\/p>\n\n\n\n
Ch\u00fang ta c\u00f3 c\u00f4ng th\u1ee9c \u0111\u1ec3 t\u00ednh \u0111i\u1ec7n tr\u1edf c\u1ee7a \u0111o\u1ea1n m\u1ea1ch n\u1ed1i ti\u1ebfp c\u00f3 hai \u0111i\u1ec7n tr\u1edf nh\u01b0 sau:<\/p>\n\n\n\n
Rt\u0111 = R1 + R2.<\/p>\n\n\n\n
Trong \u0111\u00f3 Rt\u0111 ch\u00ednh l\u00e0 \u0111i\u1ec7n tr\u1edf c\u1ee7a to\u00e0n m\u1ea1ch. R1 v\u00e0 R2 l\u00e0 \u0111\u1ed9 l\u1edbn c\u1ee7a hai \u0111i\u1ec7n tr\u1edf m\u1eafc n\u1ed1i ti\u1ebfp trong m\u1ea1ch. C\u00e1c em c\u00f3 th\u1ec3 d\u00f9ng c\u00f4ng th\u1ee9c n\u00e0y trong tr\u01b0\u1eddng h\u1ee3p m\u1ea1ch ch\u1ec9 ch\u1ee9a hai \u0111i\u1ec7n tr\u1edf m\u1eafc n\u1ed1i ti\u1ebfp.<\/p>\n\n\n\n
Ngo\u00e0i ra, c\u00e1c em c\u1ea7n nh\u1edb hi\u1ec7u \u0111i\u1ec7n th\u1ebf gi\u1eefa hai \u0111\u1ea7u m\u1ed7i \u0111i\u1ec7n tr\u1edf t\u1ec9 l\u1ec7 thu\u1eadn v\u1edbi \u0111i\u1ec7n tr\u1edf \u0111\u00f3. Ch\u00fang ta c\u00f3 c\u00f4ng th\u1ee9c t\u00ednh hi\u1ec7u \u0111i\u1ec7n th\u1ebf nh\u01b0 sau: U1\/U2 = R1\/R2. Trong \u0111\u00f3 U1, U2 l\u00e0 hi\u1ec7u \u0111i\u1ec7n th\u1ebf c\u1ee7a c\u00e1c \u0111i\u1ec7n tr\u1edf trong m\u1ea1ch. R1, R2 l\u00e0 \u0111i\u1ec7n tr\u1edf c\u00f3 trong m\u1ea1ch. \u0110\u00e2y l\u00e0 nh\u1eefng c\u00f4ng th\u1ee9c \u0111\u01b0\u1ee3c d\u00f9ng trong \u0111o\u1ea1n m\u1ea1ch c\u00f3 hai \u0111i\u1ec7n tr\u1edf. C\u00e1c em c\u00f3 th\u1ec3 ghi nh\u1edb v\u1ec1 nh\u1eefng v\u00ed d\u1ee5 n\u00e0y \u0111\u1ec3 \u00e1p d\u1ee5ng ch\u00ednh x\u00e1c nh\u1ea5t.<\/p>\n\n\n\n
Ampe k\u1ebf m\u1eafc trong \u0111o\u1ea1n m\u1ea1ch n\u1ed1i ti\u1ebfp<\/p>\n\n\n\n
Nh\u01b0 ch\u00fang ta \u0111\u00e3 n\u00f3i \u0111\u1ebfn ph\u00eda tr\u00ean, khi x\u00e9t v\u1ec1 \u0111i\u1ec7n tr\u1edf, ch\u00fang ta c\u1ea7n t\u00ednh t\u1ed5ng c\u00e1c \u0111i\u1ec7n tr\u1edf th\u00e0nh ph\u1ea7n. Tuy nhi\u00ean trong \u0111o\u1ea1n m\u1ea1ch n\u1ed1i ti\u1ebfp th\u00ec \u0111i\u1ec7n tr\u1edf c\u1ee7a Ampe k\u1ebf ho\u00e0n to\u00e0n c\u00f3 th\u1ec3 b\u1ecf qua. B\u1edfi l\u1ebd, \u0111i\u1ec7n tr\u1edf c\u1ee7a Ampe k\u1ebf t\u00e1c d\u1ee5ng l\u00ean d\u00f2ng \u0111i\u1ec7n l\u00e0 r\u1ea5t nh\u1ecf. Ch\u00fang ta th\u01b0\u1eddng l\u1eafp Ampe k\u1ebf \u0111\u1ec3 \u0111o c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n c\u00f3 trong m\u1ea1ch. Ch\u00ednh v\u00ec v\u1eady, khi t\u00ednh v\u1ec1 \u0111i\u1ec7n tr\u1edf, ch\u00fang ta c\u00f3 th\u1ec3 b\u1ecf qua \u0111i\u1ec1u n\u00e0y.<\/p>\n\n\n\n
\u0110o\u1ea1n m\u1ea1ch c\u00f3 c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n l\u1eafp n\u1ed1i ti\u1ebfp nhau<\/p>\n\n\n\n
Nh\u1eefng ki\u1ebfn th\u1ee9c v\u1ec1 ch\u1ee7 \u0111\u1ec1 \u0111o\u1ea1n m\u1ea1ch n\u1ed1i ti\u1ebfp \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u00fang t\u00f4i \u0111\u1ec1 c\u1eadp \u0111\u1ebfn tr\u00ean \u0111\u00e2y. Hy v\u1ecdng nh\u1eefng ki\u1ebfn th\u1ee9c n\u00e0y c\u00f3 th\u1ec3 gi\u00fap c\u00e1c em l\u00e0m b\u00e0i t\u1eadp d\u1ec5 d\u00e0ng h\u01a1n. Kh\u00f4ng ch\u1ec9 v\u1eady, ch\u00fang t\u00f4i c\u00f2n t\u1ed5ng h\u1ee3p c\u00e1c v\u00ed d\u1ee5 v\u00f4 c\u00f9ng d\u1ec5 hi\u1ec3u v\u1ec1 ch\u1ee7 \u0111\u1ec1 n\u00e0y cho c\u00e1c em tham kh\u1ea3o. C\u00e1c em n\u00ean ghi nh\u1edb v\u00e0 ch\u00e9p l\u1ea1i nh\u1eefng \u0111i\u1ec1u n\u00e0y \u0111\u1ec3 c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng trong b\u00e0i h\u1ecdc nh\u00e9!<\/p>\n\n\n\n
Ngo\u00e0i ra, tr\u00ean trang ch\u1ee7 c\u1ee7a ch\u00fang t\u00f4i c\u00f2n c\u00f3 r\u1ea5t nhi\u1ec1u nh\u1eefng b\u00e0i vi\u1ebft kh\u00e1c v\u1ec1 ch\u1ee7 \u0111\u1ec1 v\u1eadt l\u00fd 9. C\u00e1c em c\u00f3 th\u1ec3 tham kh\u1ea3o ngay t\u1ea1i \u0111\u00e2y. Ho\u1eb7c tr\u1ef1c ti\u1ebfp truy c\u1eadp v\u00e0o trang ch\u1ee7 \u0111\u1ec3 ch\u1ecdn l\u1ecdc nh\u1eefng b\u00e0i vi\u1ebft mu\u1ed1n tham kh\u1ea3o. \u0110\u00e2y ch\u00ednh l\u00e0 nh\u1eefng b\u00e0i t\u1ed5ng h\u1ee3p ki\u1ebfn th\u1ee9c c\u1ea7n thi\u1ebft<\/p>\n\n\n\n\n\n\n","protected":false},"excerpt":{"rendered":"
Ghi ch\u00fa: T\u00e0i li\u1ec7u tr\u00edch d\u1eabn Ch\u00fang ta nh\u00ecn th\u1ea5y r\u1ea5t nhi\u1ec1u d\u00e2y \u0111i\u1ec7n, m\u1ea1ch \u0111i\u1ec7n trong cu\u1ed9c s\u1ed1ng. Th\u1ebf nh\u01b0ng, c\u1ea5u t\u1ea1o c\u1ee7a nh\u1eefng m\u1ea1ch \u0111i\u1ec7n n\u00e0y nh\u01b0 th\u1ebf n\u00e0o? H\u1eb3n s\u1ebd c\u00f3 nhi\u1ec1u ng\u01b0\u1eddi ch\u01b0a bi\u1ebft \u0111\u1ebfn. M\u1ea1ch \u0111i\u1ec7n c\u00f3 th\u1ec3 l\u1eafp \u0111\u01b0\u1ee3c theo nh\u1eefng ki\u1ec3u g\u00ec? Ki\u1ebfn th\u1ee9c v\u1eadt l\u00fd 9 s\u1ebd […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_disable_autopaging":false},"categories":[4,7],"tags":[],"class_list":["post-1239","post","type-post","status-publish","format-standard","hentry","category-trung-hoc","category-vat-ly"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/1239","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/comments?post=1239"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/1239\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=1239"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=1239"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=1239"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}