\u0110\u00e1p \u00e1n & \u0110\u1ec1 thi h\u1ecdc k\u00ec 1 l\u1edbp 11 m\u00f4n V\u1eadt L\u00fd n\u0103m 2014 Tr\u01b0\u1eddng THPT Nguy\u1ec5n B\u1ec9nh Khi\u00eam (C\u01a1 b\u1ea3n). C\u00e1c em tham kh\u1ea3o<\/p>\n
I. PH\u1ea6N TR\u1eaeC NGHI\u1ec6M ( 5 \u0110i\u1ec3m )<\/u><\/strong><\/p>\n C\u00e2u 1:\u00a0<\/strong>B\u1ea3n ch\u1ea5t d\u00f2ng \u0111i\u1ec7n trong ch\u1ea5t \u0111i\u1ec7n ph\u00e2n l\u00e0 ?<\/p>\n A.<\/strong>\u00a0D\u00f2ng ion d\u01b0\u01a1ng d\u1ecbch chuy\u1ec3n theo chi\u1ec1u \u0111i\u1ec7n tr\u01b0\u1eddng.<\/p>\n B.<\/strong>\u00a0D\u00f2ng ion \u00e2m d\u1ecbch chuy\u1ec3n ng\u01b0\u1ee3c chi\u1ec1u \u0111i\u1ec7n tr\u01b0\u1eddng.<\/p>\n C.<\/strong>\u00a0D\u00f2ng electron d\u1ecbch chuy\u1ec3n ng\u01b0\u1ee3c chi\u1ec1u \u0111i\u1ec7n tr\u01b0\u1eddng.<\/p>\n D.<\/strong>\u00a0D\u00f2ng ion d\u01b0\u01a1ng v\u00e0 d\u00f2ng ion \u00e2m chuy\u1ec3n \u0111\u1ed9ng c\u00f3 h\u01b0\u1edbng theo hai chi\u1ec1u ng\u01b0\u1ee3c nhau.<\/p>\n C\u00e2u 2:\u00a0<\/strong>Trong c\u00e1c nh\u1eadn \u0111\u1ecbnh sau, nh\u1eadn \u0111\u1ecbnh n\u00e0o v\u1ec1 d\u00f2ng \u0111i\u1ec7n trong kim lo\u1ea1i l\u00e0\u00a0\u00a0\u0111\u00fang<\/em><\/strong>?<\/p>\n A.<\/strong>\u00a0D\u00f2ng \u0111i\u1ec7n trong kim lo\u1ea1i l\u00e0 d\u00f2ng chuy\u1ec3n d\u1eddi c\u00f3 h\u01b0\u1edbng c\u1ee7a c\u00e1c electron t\u1ef1 do ng\u01b0\u1ee3c chi\u1ec1u \u0111i\u1ec7n tr\u01b0\u1eddng;<\/p>\n B.<\/strong>\u00a0D\u00f2ng \u0111i\u1ec7n trong kim lo\u1ea1i l\u00e0 d\u00f2ng chuy\u1ec3n d\u1eddi c\u00f3 h\u01b0\u1edbng c\u1ee7a c\u00e1c electron t\u1ef1 do c\u00f9ng chi\u1ec1u \u0111i\u1ec7n tr\u01b0\u1eddng;<\/p>\n C.<\/strong>\u00a0D\u00f2ng \u0111i\u1ec7n trong kim lo\u1ea1i l\u00e0 d\u00f2ng chuy\u1ec3n d\u1eddi c\u00f3 h\u01b0\u1edbng c\u1ee7a c\u00e1c ion \u00e2m c\u00f9ng chi\u1ec1u \u0111i\u1ec7n tr\u01b0\u1eddng;<\/p>\n D.\u00a0<\/strong>D\u00f2ng \u0111i\u1ec7n trong kim lo\u1ea1i l\u00e0 d\u00f2ng chuy\u1ec3n d\u1eddi c\u00f3 h\u01b0\u1edbng c\u1ee7a c\u00e1c ion d\u01b0\u01a1ng c\u00f9ng chi\u1ec1u \u0111i\u1ec7n tr\u01b0\u1eddng; .<\/p>\n C\u00e2u 3:<\/u><\/strong>\u00a0 Khi kho\u1ea3ng c\u00e1ch gi\u1eefa hai \u0111i\u1ec7n t\u00edch \u0111i\u1ec3m trong ch\u00e2n kh\u00f4ng gi\u1ea3m xu\u1ed1ng 2 l\u1ea7n th\u00ec \u0111\u1ed9 l\u1edbn l\u1ef1c Cu \u2013 l\u00f4ng<\/p>\n A.<\/strong>\u00a0t\u0103ng 4 l\u1ea7n. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0B.<\/strong>\u00a0t\u0103ng 2 l\u1ea7n.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0C.<\/strong>\u00a0gi\u1ea3m 4 l\u1ea7n.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0D.<\/strong>\u00a0gi\u1ea3m 2 l\u1ea7n.<\/p>\n C\u00e2u 4:<\/u><\/strong>\u00a0M\u1ed9t \u0111i\u1ec7n t\u00edch -1 \u03bcC \u0111\u1eb7t trong ch\u00e2n kh\u00f4ng sinh ra \u0111i\u1ec7n tr\u01b0\u1eddng t\u1ea1i m\u1ed9t \u0111i\u1ec3m c\u00e1ch n\u00f3 1m \u00a0c\u00f3 \u0111\u1ed9 l\u1edbn v\u00e0 h\u01b0\u1edbng l\u00e0<\/p>\n A.\u00a0<\/strong>9000 V\/m, h\u01b0\u1edbng v\u1ec1 ph\u00eda n\u00f3. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0B.<\/strong>\u00a09000 V\/m, h\u01b0\u1edbng ra xa n\u00f3.<\/p>\n C.<\/strong>\u00a09.109<\/sup>\u00a0V\/m, h\u01b0\u1edbng v\u1ec1 ph\u00eda n\u00f3.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0D<\/strong>. 9.109<\/sup>\u00a0V\/m, h\u01b0\u1edbng ra xa n\u00f3.<\/p>\n C\u00e2u 5:<\/u><\/strong>\u00a0 C\u00f4ng c\u1ee7a l\u1ef1c \u0111i\u1ec7n kh\u00f4ng ph\u1ee5 thu\u1ed9c v\u00e0o<\/p>\n A.<\/strong>\u00a0V\u1ecb tr\u00ed \u0111i\u1ec3m \u0111\u1ea7u v\u00e0 \u0111i\u1ec3m cu\u1ed1i \u0111\u01b0\u1eddng \u0111i.\u00a0\u00a0B.<\/strong>\u00a0C\u01b0\u1eddng \u0111\u1ed9 c\u1ee7a \u0111i\u1ec7n tr\u01b0\u1eddng.<\/p>\n C.<\/strong>\u00a0H\u00ecnh d\u1ea1ng c\u1ee7a \u0111\u01b0\u1eddng \u0111i.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0D.<\/strong>\u00a0\u0110\u1ed9 l\u1edbn \u0111i\u1ec7n t\u00edch b\u1ecb d\u1ecbch chuy\u1ec3n.<\/p>\n C\u00e2u 6:<\/u><\/strong>\u00a0M\u1ed9t d\u00f2ng \u0111i\u1ec7n kh\u00f4ng \u0111\u1ed5i c\u00f3 c\u01b0\u1eddng \u0111\u1ed9 3 A th\u00ec sau m\u1ed9t kho\u1ea3ng th\u1eddi gian c\u00f3 m\u1ed9t \u0111i\u1ec7n l\u01b0\u1ee3ng 4 C chuy\u1ec3n qua m\u1ed9t ti\u1ebft di\u1ec7n th\u1eb3ng. C\u00f9ng th\u1eddi gian \u0111\u00f3, v\u1edbi d\u00f2ng \u0111i\u1ec7n 4,5 A th\u00ec c\u00f3 m\u1ed9t \u0111i\u1ec7n l\u01b0\u1ee3ng chuy\u1ec3n qua ti\u1ebft di\u1ec7n th\u1eb1ng l\u00e0<\/p>\n A.<\/strong>\u00a04 C.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0B.<\/strong>\u00a08 C.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0C.<\/strong>\u00a04,5 C.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0D.<\/strong>\u00a06 C.<\/p>\n C\u00e2u 7:<\/u><\/strong>\u00a0Hai \u0111i\u1ec7n t\u00edch \u0111i\u1ec3m c\u00f9ng \u0111\u1ed9 l\u1edbn 10-4<\/sup>\u00a0C \u0111\u1eb7t trong ch\u00e2n kh\u00f4ng, \u0111\u1ec3 t\u01b0\u01a1ng t\u00e1c nhau b\u1eb1ng l\u1ef1c c\u00f3 \u0111\u1ed9 l\u1edbn 10-3<\/sup>\u00a0N th\u00ec ch\u00fang ph\u1ea3i \u0111\u1eb7t c\u00e1ch nhau<\/p>\n A.<\/strong>\u00a030000 m.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0B.<\/strong>\u00a0300 m.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0C.<\/strong>\u00a090000 m.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0D.<\/strong>\u00a0900 m.<\/p>\n C\u00e2u 8:<\/u><\/strong>\u00a0C\u00f4ng c\u1ee7a l\u1ef1c \u0111i\u1ec7n tr\u01b0\u1eddng\u00a0 d\u1ecbch chuy\u1ec3n m\u1ed9t \u0111i\u1ec7n t\u00edch – 2\u03bcC\u00a0 ng\u01b0\u1ee3c chi\u1ec1u m\u1ed9t \u0111\u01b0\u1eddng s\u1ee9c\u00a0 trong m\u1ed9t \u0111i\u1ec7n tr\u01b0\u1eddng \u0111\u1ec1u 1000 V\/m tr\u00ean qu\u00e3ng \u0111\u01b0\u1eddng d\u00e0i 1 m l\u00e0<\/p>\n A.<\/strong>\u00a02000 J.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0B.<\/strong>\u00a0\u2013 2000 J.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0C.<\/strong>\u00a02 mJ.\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0D.<\/strong>\u00a0\u2013 2 mJ.<\/p>\n C\u00e2u 9:<\/u><\/strong>\u00a0Gi\u1eefa hai b\u1ea3n kim lo\u1ea1i ph\u1eb3ng song song c\u00e1ch nhau 4 cm c\u00f3 m\u1ed9t hi\u1ec7u \u0111i\u1ec7n th\u1ebf kh\u00f4ng \u0111\u1ed5i 200 V. C\u01b0\u1eddng \u0111\u1ed9 \u0111i\u1ec7n tr\u01b0\u1eddng \u1edf kho\u1ea3ng gi\u1eefa hai b\u1ea3n kim lo\u1ea1i l\u00e0<\/p>\n A.<\/strong>\u00a05000 V\/m.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0B.<\/strong>\u00a050 V\/m.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0C.<\/strong>\u00a0800 V\/m.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0D.<\/strong>\u00a080 V\/m.<\/p>\n C\u00e2u 10:<\/u><\/strong>\u00a0\u00a0 T\u1ee5 \u0111i\u1ec7n l\u00e0 ?<\/p>\n A.<\/strong>\u00a0H\u1ec7 th\u1ed1ng g\u1ed3m hai v\u1eadt \u0111\u1eb7t g\u1ea7n nhau v\u00e0 ng\u0103n c\u00e1ch nhau b\u1eb1ng m\u1ed9t l\u1edbp c\u00e1ch \u0111i\u1ec7n.<\/p>\n B.<\/strong>\u00a0H\u1ec7 th\u1ed1ng g\u1ed3m hai v\u1eadt d\u1eabn \u0111\u1eb7t g\u1ea7n nhau v\u00e0 ng\u0103n c\u00e1ch nhau b\u1eb1ng m\u1ed9t l\u1edbp c\u00e1ch \u0111i\u1ec7n.<\/p>\n C.<\/strong>\u00a0H\u1ec7 th\u1ed1ng g\u1ed3m hai v\u1eadt d\u1eabn \u0111\u1eb7t ti\u1ebfp x\u00fac v\u1edbi nhau v\u00e0 \u0111\u01b0\u1ee3c bao b\u1ecdc b\u1eb1ng \u0111i\u1ec7n m\u00f4i.<\/p>\n D.<\/strong>\u00a0H\u1ec7 th\u1ed1ng hai v\u1eadt d\u1eabn \u0111\u1eb7t c\u00e1ch nhau m\u1ed9t kho\u1ea3ng \u0111\u1ee7 xa.<\/p>\n C\u00e2u 11:<\/u><\/strong>\u00a0Trong c\u00e1c nh\u1eadn x\u00e9t sau v\u1ec1 c\u00f4ng su\u1ea5t \u0111i\u1ec7n c\u1ee7a m\u1ed9t \u0111o\u1ea1n m\u1ea1ch, nh\u1eadn x\u00e9t n\u00e0o\u00a0kh\u00f4ng \u0111\u00fang<\/strong>\u00a0?<\/p>\n A.<\/strong>\u00a0C\u00f4ng su\u1ea5t t\u1ec9 l\u1ec7 thu\u1eadn v\u1edbi hi\u1ec7u \u0111i\u1ec7n th\u1ebf hai \u0111\u1ea7u m\u1ea1ch.<\/p>\n B.<\/strong>\u00a0C\u00f4ng su\u1ea5t t\u1ec9 l\u1ec7 thu\u1eadn v\u1edbi c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua m\u1ea1ch.<\/p>\n C.<\/strong>\u00a0C\u00f4ng su\u1ea5t t\u1ec9 l\u1ec7 ngh\u1ecbch v\u1edbi th\u1eddi gian d\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua m\u1ea1ch.<\/p>\n D.<\/strong>\u00a0C\u00f4ng su\u1ea5t c\u00f3 \u0111\u01a1n v\u1ecb l\u00e0 o\u00e1t (W).<\/p>\n C\u00e2u 12:<\/u><\/strong>\u00a0Nh\u1eadn x\u00e9t n\u00e0o sau \u0111\u00e2y\u00a0\u0111\u00fang<\/strong>? Theo \u0111\u1ecbnh lu\u1eadt \u00d4m cho to\u00e0n m\u1ea1ch th\u00ec c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n cho to\u00e0n m\u1ea1ch<\/p>\n A.<\/strong>\u00a0T\u1ec9 l\u1ec7 ngh\u1ecbch v\u1edbi su\u1ea5t \u0111i\u1ec7n \u0111\u1ed9ng c\u1ee7a ngu\u1ed3n;<\/p>\n B.<\/strong>\u00a0T\u1ec9 l\u1ec7 ngh\u1ecbch \u0111i\u1ec7n tr\u1edf m\u1ea1ch trong c\u1ee7a ngu\u1ed3n;<\/p>\n C.<\/strong>\u00a0T\u1ec9 l\u1ec7 ngh\u1ecbch v\u1edbi \u0111i\u1ec7n tr\u1edf m\u1ea1ch ngo\u00e0i c\u1ee7a ngu\u1ed3n;<\/p>\n D.<\/strong>\u00a0T\u1ec9 l\u1ec7 ngh\u1ecbch v\u1edbi t\u1ed5ng \u0111i\u1ec7n tr\u1edf m\u1ea1ch trong v\u00e0 \u0111i\u1ec7n tr\u1edf m\u1ea1ch ngo\u00e0i.<\/p>\n C\u00e2u 13:<\/u><\/strong>\u00a0Gh\u00e9p 3 pin gi\u1ed1ng nhau n\u1ed1i ti\u1ebfp m\u1ed7i pin c\u00f3 su\u1ea5t \u0111i\u1ec7n \u0111\u1ed9 3 V v\u00e0 \u0111i\u1ec7n tr\u1edf trong 1 \u03a9. Su\u1ea5t \u0111i\u1ec7n \u0111\u1ed9ng v\u00e0 \u0111i\u1ec7n tr\u1edf trong c\u1ee7a b\u1ed9 pin l\u00e0<\/p>\n A.<\/strong>\u00a09 V v\u00e0 3 \u03a9.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0B.<\/strong>\u00a09 V v\u00e0 1\/3 \u03a9.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0C.<\/strong>\u00a03 V v\u00e0 3 \u03a9.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0D.<\/strong>\u00a03 V v\u00e0 1\/3 \u03a9.<\/p>\n C\u00e2u 14:<\/u><\/strong>\u00a0M\u1ed9t m\u1ea1ch \u0111i\u1ec7n g\u1ed3m ngu\u1ed3n \u0111i\u1ec7n c\u00f3 su\u1ea5t \u0111i\u1ec7n \u0111\u1ed9ng 3 V v\u00e0 \u0111i\u1ec7n tr\u1edf trong 1 \u03a9. Bi\u1ebft \u0111i\u1ec7n tr\u1edf \u1edf m\u1ea1ch ngo\u00e0i l\u1edbn g\u1ea5p 2 \u0111i\u1ec7n tr\u1edf trong. D\u00f2ng \u0111i\u1ec7n trong m\u1ea1ch ch\u00ednh l\u00e0<\/p>\n A.<\/strong>\u00a01\/2 A.\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0B.<\/strong>\u00a01 A.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0C.<\/strong>\u00a02 A.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0D.<\/strong>\u00a03 A.<\/p>\n C\u00e2u 15:<\/u><\/strong>\u00a0B\u1ea3n ch\u1ea5t c\u1ee7a hi\u1ec7n t\u01b0\u1ee3ng d\u01b0\u01a1ng c\u1ef1c tan l\u00e0<\/p>\n A.<\/strong>\u00a0C\u1ef1c d\u01b0\u01a1ng c\u1ee7a b\u00ecnh \u0111i\u1ec7n ph\u00e2n b\u1ecb t\u0103ng nhi\u1ec7t \u0111\u1ed9 t\u1edbi m\u1ee9c n\u00f3ng ch\u1ea3y.<\/p>\n B.<\/strong>\u00a0C\u1ef1c d\u01b0\u01a1ng c\u1ee7a b\u00ecnh \u0111i\u1ec7n ph\u00e2n b\u1ecb m\u00e0i m\u00f2n c\u01a1 h\u1ecdc.<\/p>\n C.<\/strong>\u00a0C\u1ef1c d\u01b0\u01a1ng c\u1ee7a b\u00ecnh \u0111i\u1ec7n ph\u00e2n b\u1ecb t\u00e1c d\u1ee5ng h\u00f3a h\u1ecdc t\u1ea1o th\u00e0nh ch\u1ea5t \u0111i\u1ec7n ph\u00e2n v\u00e0 tan v\u00e0o dung d\u1ecbch.<\/p>\n D.<\/strong>\u00a0C\u1ef1c d\u01b0\u01a1ng c\u1ee7a b\u00ecnh \u0111i\u1ec7n ph\u00e2n b\u1ecb bay h\u01a1i.<\/p>\n II. PH\u1ea6N T\u1ef0 LU\u1eacN ( 5 \u0110i\u1ec3m )<\/u><\/strong><\/p>\n B\u00e0i 1: ( 2 \u0110i\u1ec3m )<\/u><\/strong>\u00a0Cho hai \u0111i\u1ec7n t\u00edch \u0111i\u1ec3m q1<\/sub>\u00a0= 4.10\u00ad-7\u00a0<\/sup>C v\u00e0 q2<\/sub>\u00a0= 5.10-6\u00a0<\/sup>C \u0111\u1eb7t t\u1ea1i hai \u0111i\u1ec3m A v\u00e0 B c\u00e1ch nhau m\u1ed9t kho\u1ea3ng AB = 8 cm trong ch\u00e2n kh\u00f4ng. T\u1ea1i \u0111i\u1ec3m C ng\u01b0\u1eddi ta \u0111\u1eb7t \u0111i\u1ec7n t\u00edch \u0111i\u1ec3m q3<\/sub>\u00a0= 2.10-7<\/sup>\u00a0C. H\u00e3y t\u00ednh \u0111\u1ed9 l\u1edbn l\u1ef1c t\u1ed5ng h\u1ee3p do q1<\/sub>\u00a0v\u00e0 q2<\/sub>\u00a0t\u00e1c d\u1ee5ng l\u00ean q3<\/sub>. Bi\u1ebft AC = 2 cm , BC = 10 cm.<\/p>\n B\u00e0i 2 : ( 3 \u0110i\u1ec3m )<\/u><\/strong>\u00a0<\/strong>Cho m\u1ea1ch \u0111i\u1ec7n nh\u01b0 h\u00ecnh v\u1ebd sau: B\u1ed9 ngu\u1ed3n\u00a0g\u1ed3m 4 ngu\u1ed3n \u0111i\u1ec7n gi\u1ed1ng nhau c\u00f3 su\u1ea5t \u0111i\u1ec7n \u0111\u1ed9ng v\u00e0 \u0111i\u1ec7n tr\u1edf\u00a0trong l\u1ea7n l\u01b0\u1ee3t l\u00e0 \u00a0= 3 V, r =0,5 . C\u00e1c \u0111i\u1ec7n tr\u1edf R1<\/sub>\u00a0= 2 ,\u00a0R2<\/sub>\u00a0= \u00a03, R3<\/sub>\u00a0= 6 . B\u00ecnh \u0111i\u1ec7n ph\u00e2n ch\u1ee9a dung d\u1ecbch CuSO4\u00a0<\/sub>\u00a0c\u00e1c \u0111i\u1ec7n c\u1ef1c l\u00e0m b\u1eb1ng Cu c\u00f3 \u0111i\u1ec7n tr\u1edf Rp<\/sub>\u00a0= 6<\/p>\n a) T\u00ednh c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua c\u00e1c \u0111i\u1ec7n tr\u1edf v\u00e0 b\u00ecnh\u00a0\u0111i\u1ec7n ph\u00e2n .<\/p>\n b) T\u00ednh kh\u1ed1i l\u01b0\u1ee3ng kim lo\u1ea1i Cu b\u00e1m v\u00e0o cat\u1ed1t sau th\u1eddi gian\u00a032 ph\u00fat 10 gi\u00e2y \u0111i\u1ec7n ph\u00e2n, bi\u1ebft ( ACu<\/sub>\u00a0= 64 g\/mol, n = 2, F = 96500 C\/mol )<\/p>\n c) \u00a0Gi\u1ea3 s\u1eed R2\u00a0<\/sub>l\u00e0 m\u1ed9t bi\u1ebfn tr\u1edf c\u00f3 th\u1ec3 thay \u0111\u1ed5i gi\u00e1 tr\u1ecb t\u1eeb 0 \u0111\u1ebfn v\u00e0i tr\u0103m<\/p>\n H\u00e3y x\u00e1c \u0111\u1ecbnh gi\u00e1 tr\u1ecb c\u1ee7a R2<\/sub>\u00a0c\u1ea7n thay \u0111\u1ed5i \u0111\u1ec3 cho l\u01b0\u1ee3ng Cu b\u00e1m v\u00e0o cat\u1ed1t trong th\u1eddi gian \u0111i\u1ec7n ph\u00e2n n\u00f3i tr\u00ean \u0111\u1ea1t gi\u00e1 tr\u1ecb l\u1edbn nh\u1ea5t.<\/p>\n <\/p>\n \n I. PH\u1ea6N TR\u1eaeC NGHI\u1ec6M ( 5 \u0110i\u1ec3m )<\/u><\/strong><\/p>\n <\/u><\/strong><\/p>\n II. PH\u1ea6N T\u1ef0 LU\u1eacN ( 5 \u0110i\u1ec3m )<\/u><\/strong><\/p>\n <\/p>\n","protected":false},"excerpt":{"rendered":" \u0110\u00e1p \u00e1n & \u0110\u1ec1 thi h\u1ecdc k\u00ec 1 l\u1edbp 11 m\u00f4n V\u1eadt L\u00fd n\u0103m 2014 Tr\u01b0\u1eddng THPT Nguy\u1ec5n B\u1ec9nh Khi\u00eam (C\u01a1 b\u1ea3n). C\u00e1c em tham kh\u1ea3o \u0110\u1ec1 thi h\u1ecdc k\u00ec 1 l\u1edbp 11 m\u00f4n V\u1eadt L\u00fd n\u0103m 2014 Tr\u01b0\u1eddng THPT Nguy\u1ec5n B\u1ec9nh Khi\u00eam (C\u01a1 b\u1ea3n) I. PH\u1ea6N TR\u1eaeC NGHI\u1ec6M ( 5 \u0110i\u1ec3m ) C\u00e2u 1:\u00a0B\u1ea3n […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false,"tdm_status":"","tdm_grid_status":""},"categories":[171],"tags":[],"yoast_head":"\n\u0110\u00e1p \u00e1n\u00a0\u0110\u1ec1 thi h\u1ecdc k\u00ec 1 l\u1edbp 11 m\u00f4n V\u1eadt L\u00fd n\u0103m 2014 Tr\u01b0\u1eddng THPT Nguy\u1ec5n B\u1ec9nh Khi\u00eam (C\u01a1 b\u1ea3n)<\/h3>\n
\n<\/u><\/strong><\/p>\n