{"segment":[{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":"\u0110\u1ed5i \u0111\u01a1n v\u1ecb cho gi\u00e1 tr\u1ecb sau \u0111\u00e2y:<br\/>0,35A = ... mA","select":["A. 0,35A = 350mA","B. 0,35A = 35mA","C. 0,35A = 3,5mA","D. 0,35A = 3500mA"],"hint":"","explain":"<span class='basic_left'> C\u00f3 1A = 1000mA. N\u00ean 0,35A = 350mA.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 A.<\/span><\/span> ","column":2}]}],"id_ques":2491},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":"\u0110\u1ed5i \u0111\u01a1n v\u1ecb cho gi\u00e1 tr\u1ecb sau \u0111\u00e2y:<br\/>425mA = ..... A","select":["A. 425mA = 425A","B. 425mA = 0,425A","C. 425mA = 42,5A ","D. 425mA = 0,0425A"],"hint":"","explain":"<span class='basic_left'> C\u00f3 1000mA = 1A n\u00ean 425mA = 0,425A<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":2}]}],"id_ques":2492},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":"<center><img src='https://www.luyenthi123.com/file/luyenthi123/lop7/vatly/bai24/lv2/img\/h0.jpg'\/><\/center>H\u00ecnh tr\u00ean v\u1ebd m\u1eb7t s\u1ed1 c\u1ee7a m\u1ed9t ampe k\u1ebf. H\u00e3y cho bi\u1ebft:<br\/>Gi\u1edbi h\u1ea1n c\u1ee7a ampe k\u1ebf.","select":["A. GH\u0110 l\u00e0 s\u1ed1 \u0111o l\u1edbn nh\u1ea5t tr\u00ean ampe k\u1ebf: 1,6A","B. GH\u0110 l\u00e0 s\u1ed1 \u0111o l\u1edbn nh\u1ea5t tr\u00ean ampe k\u1ebf: 0A","C. GH\u0110 l\u00e0 s\u1ed1 \u0111o l\u1edbn nh\u1ea5t tr\u00ean ampe k\u1ebf: 1A","D. GH\u0110 l\u00e0 s\u1ed1 \u0111o l\u1edbn nh\u1ea5t tr\u00ean ampe k\u1ebf: 2A"],"hint":"","explain":"<span class='basic_left'>T\u1eeb h\u00ecnh v\u1ebd ta th\u1ea5y GH\u0110 l\u00e0 s\u1ed1 \u0111o l\u1edbn nh\u1ea5t tr\u00ean ampe k\u1ebf: 1,6A<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 A.<\/span><\/span> ","column":1}]}],"id_ques":2493},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":"<center><img src='https://www.luyenthi123.com/file/luyenthi123/lop7/vatly/bai24/lv2/img\/h0.jpg'\/><\/center>H\u00ecnh tr\u00ean v\u1ebd m\u1eb7t s\u1ed1 c\u1ee7a m\u1ed9t ampe k\u1ebf. H\u00e3y cho bi\u1ebft:<br\/>\u0110\u1ed9 chia nh\u1ecf nh\u1ea5t?","select":["A. \u0110CNN l\u00e0 kho\u1ea3ng c\u00e1ch g\u1ea7n nh\u1ea5t gi\u1eefa hai v\u1ea1ch tr\u00ean ampe k\u1ebf: 0,2A","B. \u0110CNN l\u00e0 kho\u1ea3ng c\u00e1ch g\u1ea7n nh\u1ea5t gi\u1eefa hai v\u1ea1ch tr\u00ean ampe k\u1ebf: 1,6A","C. \u0110CNN l\u00e0 kho\u1ea3ng c\u00e1ch g\u1ea7n nh\u1ea5t gi\u1eefa hai v\u1ea1ch tr\u00ean ampe k\u1ebf: 0,1A","D. \u0110CNN l\u00e0 kho\u1ea3ng c\u00e1ch g\u1ea7n nh\u1ea5t gi\u1eefa hai v\u1ea1ch tr\u00ean ampe k\u1ebf: 1A"],"hint":"","explain":"<span class='basic_left'>T\u1eeb h\u00ecnh ta c\u00f3: \u0110CNN l\u00e0 kho\u1ea3ng c\u00e1ch g\u1ea7n nh\u1ea5t gi\u1eefa hai v\u1ea1ch tr\u00ean ampe k\u1ebf: 0,1A.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":1}]}],"id_ques":2494},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":5,"ques":"<center><img src='https://www.luyenthi123.com/file/luyenthi123/lop7/vatly/bai24/lv2/img\/h0.jpg'\/><\/center>H\u00ecnh tr\u00ean v\u1ebd m\u1eb7t s\u1ed1 c\u1ee7a m\u1ed9t ampe k\u1ebf. H\u00e3y cho bi\u1ebft:<br\/>S\u1ed1 ch\u1ec9 c\u1ee7a ampe k\u1ebf khi kim \u1edf v\u1ecb tr\u00ed (1)?","select":["A. S\u1ed1 ch\u1ec9 c\u1ee7a ampe k\u1ebf khi kim \u1edf v\u1ecb tr\u00ed (1) l\u00e0: ${{I}_{1}}$ = 0,1 A","B. S\u1ed1 ch\u1ec9 c\u1ee7a ampe k\u1ebf khi kim \u1edf v\u1ecb tr\u00ed (1) l\u00e0: ${{I}_{1}}$ =0,2 A","C. S\u1ed1 ch\u1ec9 c\u1ee7a ampe k\u1ebf khi kim \u1edf v\u1ecb tr\u00ed (1) l\u00e0: ${{I}_{1}}$ =0,3 A","D. S\u1ed1 ch\u1ec9 c\u1ee7a ampe k\u1ebf khi kim \u1edf v\u1ecb tr\u00ed (1) l\u00e0: ${{I}_{1}}$ =0,4 A "],"hint":"","explain":"<span class='basic_left'>S\u1ed1 ch\u1ec9 c\u1ee7a ampe k\u1ebf khi kim \u1edf v\u1ecb tr\u00ed (1) l\u00e0: ${{I}_{1}}$ = 0,4 A<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 D.<\/span><\/span> ","column":1}]}],"id_ques":2495},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":"<center><img src='https://www.luyenthi123.com/file/luyenthi123/lop7/vatly/bai24/lv2/img\/h0.jpg'\/><\/center>H\u00ecnh tr\u00ean v\u1ebd m\u1eb7t s\u1ed1 c\u1ee7a m\u1ed9t ampe k\u1ebf. H\u00e3y cho bi\u1ebft:<br\/>S\u1ed1 ch\u1ec9 c\u1ee7a ampe k\u1ebf khi kim \u1edf v\u1ecb tr\u00ed (2)?","select":["A. S\u1ed1 ch\u1ec9 c\u1ee7a ampe k\u1ebf khi kim \u1edf v\u1ecb tr\u00ed (2) l\u00e0: ${{I}_{2}}$ = 1,1 A","B. S\u1ed1 ch\u1ec9 c\u1ee7a ampe k\u1ebf khi kim \u1edf v\u1ecb tr\u00ed (2) l\u00e0: ${{I}_{2}}$ = 1,2 A","C. S\u1ed1 ch\u1ec9 c\u1ee7a ampe k\u1ebf khi kim \u1edf v\u1ecb tr\u00ed (2) l\u00e0: ${{I}_{2}}$ = 1,3 A","D. S\u1ed1 ch\u1ec9 c\u1ee7a ampe k\u1ebf khi kim \u1edf v\u1ecb tr\u00ed (2) l\u00e0: ${{I}_{2}}$ = 1,4 A "],"hint":"","explain":"<span class='basic_left'>T\u1eeb h\u00ecnh v\u1ebd ta c\u00f3: S\u1ed1 ch\u1ec9 c\u1ee7a ampe k\u1ebf khi kim \u1edf v\u1ecb tr\u00ed (2) l\u00e0: ${{I}_{2}}$ = 1,3 A<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":1}]}],"id_ques":2496},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":"C\u00f3 b\u1ed1n ampe k\u1ebf v\u1edbi c\u00e1c gi\u1edbi h\u1ea1n \u0111o l\u1ea7n l\u01b0\u1ee3t l\u00e0:<br\/>Ampe k\u1ebf 1 c\u00f3 GH\u0110 l\u00e0 50mA<br\/> Ampe k\u1ebf 2 c\u00f3 GH\u0110 l\u00e0 1,5A<br\/> Ampe k\u1ebf 3 c\u00f3 GH\u0110 l\u00e0 0,5A<br\/> Ampe k\u1ebf 4 c\u00f3 GH\u0110 l\u00e0 1A<br\/>H\u00e3y ch\u1ecdn ampe k\u1ebf ph\u00f9 h\u1ee3p nh\u1ea5t \u0111\u1ec3 \u0111o m\u1ed7i tr\u01b0\u1eddng h\u1ee3p sau \u0111\u00e2y: <br\/>D\u00f2ng \u0111i\u1ec7n qua b\u00f3ng \u0111\u00e8n pin c\u00f3 c\u01b0\u1eddng \u0111\u1ed9 0,35A. ","select":["A. D\u00f9ng ampe k\u1ebf s\u1ed1 3 c\u00f3 gi\u1edbi h\u1ea1n \u0111o l\u00e0 0,5 A","B. D\u00f9ng ampe k\u1ebf s\u1ed1 2 c\u00f3 gi\u1edbi h\u1ea1n \u0111o l\u00e0 1,5 A","C. D\u00f9ng ampe k\u1ebf s\u1ed1 4 c\u00f3 gi\u1edbi h\u1ea1n \u0111o l\u00e0 1 A","D. D\u00f9ng ampe k\u1ebf s\u1ed1 1 c\u00f3 gi\u1edbi h\u1ea1n \u0111o l\u00e0 50 mA"],"hint":"","explain":"<span class='basic_left'>V\u00ec khi d\u00f9ng ampe k\u1ebf c\u00f3 GH\u0110 g\u1ea7n nh\u1ea5t v\u1edbi k\u1ebft qu\u1ea3 c\u1ea7n \u0111o th\u00ec s\u1ebd cho \u0111\u1ed9 ch\u00ednh x\u00e1c cao nh\u1ea5t. V\u00ec d\u00f2ng \u0111i\u1ec7n c\u1ea7n \u0111o l\u00e0 0,35A n\u00ean ta d\u00f9ng ampe k\u1ebf s\u1ed1 3 c\u00f3 gi\u1edbi h\u1ea1n \u0111o l\u00e0 0,5A. <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 A.<\/span><\/span> ","column":1}]}],"id_ques":2497},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":5,"ques":" C\u00f3 b\u1ed1n ampe k\u1ebf v\u1edbi c\u00e1c gi\u1edbi h\u1ea1n \u0111o l\u1ea7n l\u01b0\u1ee3t l\u00e0:<br\/>Ampe k\u1ebf 1 c\u00f3 GH\u0110 l\u00e0 50mA<br\/> Ampe k\u1ebf 2 c\u00f3 GH\u0110 l\u00e0 1,5A<br\/> Ampe k\u1ebf 3 c\u00f3 GH\u0110 l\u00e0 0,5A<br\/> Ampe k\u1ebf 4 c\u00f3 GH\u0110 l\u00e0 1A<br\/>H\u00e3y ch\u1ecdn ampe k\u1ebf ph\u00f9 h\u1ee3p nh\u1ea5t \u0111\u1ec3 \u0111o m\u1ed7i tr\u01b0\u1eddng h\u1ee3p sau \u0111\u00e2y: <br\/>D\u00f2ng \u0111i\u1ec7n qua \u0111\u00e8n \u0111i\u00f4t ph\u00e1t quang c\u00f3 c\u01b0\u1eddng \u0111\u1ed9 12mA.","select":["A. D\u00f9ng ampe k\u1ebf s\u1ed1 3 c\u00f3 gi\u1edbi h\u1ea1n \u0111o l\u00e0 0,5 A","B. D\u00f9ng ampe k\u1ebf s\u1ed1 2 c\u00f3 gi\u1edbi h\u1ea1n \u0111o l\u00e0 1,5 A","C. D\u00f9ng ampe k\u1ebf s\u1ed1 4 c\u00f3 gi\u1edbi h\u1ea1n \u0111o l\u00e0 1 A","D. D\u00f9ng ampe k\u1ebf s\u1ed1 1 c\u00f3 gi\u1edbi h\u1ea1n \u0111o l\u00e0 50 mA"],"hint":"","explain":"<span class='basic_left'>V\u00ec khi d\u00f9ng ampe k\u1ebf c\u00f3 GH\u0110 g\u1ea7n nh\u1ea5t v\u1edbi k\u1ebft qu\u1ea3 c\u1ea7n \u0111o th\u00ec s\u1ebd cho \u0111\u1ed9 ch\u00ednh x\u00e1c cao nh\u1ea5t. V\u00ec d\u00f2ng \u0111i\u1ec7n c\u1ea7n \u0111o l\u00e0 12mA n\u00ean ta d\u00f9ng ampe k\u1ebf s\u1ed1 1 c\u00f3 gi\u1edbi h\u1ea1n \u0111o l\u00e0 50mA.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 D.<\/span><\/span> ","column":1}]}],"id_ques":2498},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":"C\u00f3 b\u1ed1n ampe k\u1ebf v\u1edbi c\u00e1c gi\u1edbi h\u1ea1n \u0111o l\u1ea7n l\u01b0\u1ee3t l\u00e0:<br\/>Ampe k\u1ebf 1 c\u00f3 GH\u0110 l\u00e0 50mA<br\/> Ampe k\u1ebf 2 c\u00f3 GH\u0110 l\u00e0 1,5A<br\/> Ampe k\u1ebf 3 c\u00f3 GH\u0110 l\u00e0 0,5A<br\/> Ampe k\u1ebf 4 c\u00f3 GH\u0110 l\u00e0 1A<br\/>H\u00e3y ch\u1ecdn ampe k\u1ebf ph\u00f9 h\u1ee3p nh\u1ea5t \u0111\u1ec3 \u0111o m\u1ed7i tr\u01b0\u1eddng h\u1ee3p sau \u0111\u00e2y: <br\/>D\u00f2ng \u0111i\u1ec7n qua nam ch\u00e2m \u0111i\u1ec7n c\u00f3 c\u01b0\u1eddng \u0111\u1ed9 0,8A.","select":["A. D\u00f9ng ampe k\u1ebf s\u1ed1 3 c\u00f3 gi\u1edbi h\u1ea1n \u0111o l\u00e0 0,5 A","B. D\u00f9ng ampe k\u1ebf s\u1ed1 2 c\u00f3 gi\u1edbi h\u1ea1n \u0111o l\u00e0 1,5 A","C. D\u00f9ng ampe k\u1ebf s\u1ed1 4 c\u00f3 gi\u1edbi h\u1ea1n \u0111o l\u00e0 1 A","D. D\u00f9ng ampe k\u1ebf s\u1ed1 1 c\u00f3 gi\u1edbi h\u1ea1n \u0111o l\u00e0 50 mA"],"hint":"","explain":"<span class='basic_left'>V\u00ec khi d\u00f9ng ampe k\u1ebf c\u00f3 GH\u0110 g\u1ea7n nh\u1ea5t v\u1edbi k\u1ebft qu\u1ea3 c\u1ea7n \u0111o th\u00ec s\u1ebd cho \u0111\u1ed9 ch\u00ednh x\u00e1c cao nh\u1ea5t. V\u00ec d\u00f2ng \u0111i\u1ec7n c\u1ea7n \u0111o l\u00e0 0,8A n\u00ean ta d\u00f9ng ampe k\u1ebf s\u1ed1 4 c\u00f3 gi\u1edbi h\u1ea1n \u0111o l\u00e0 1A.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":1}]}],"id_ques":2499},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":"C\u00f3 b\u1ed1n ampe k\u1ebf v\u1edbi c\u00e1c gi\u1edbi h\u1ea1n \u0111o l\u1ea7n l\u01b0\u1ee3t l\u00e0:<br\/>Ampe k\u1ebf 1 c\u00f3 GH\u0110 l\u00e0 50mA<br\/> Ampe k\u1ebf 2 c\u00f3 GH\u0110 l\u00e0 1,5A<br\/> Ampe k\u1ebf 3 c\u00f3 GH\u0110 l\u00e0 0,5A<br\/> Ampe k\u1ebf 4 c\u00f3 GH\u0110 l\u00e0 1A<br\/>H\u00e3y ch\u1ecdn ampe k\u1ebf ph\u00f9 h\u1ee3p nh\u1ea5t \u0111\u1ec3 \u0111o m\u1ed7i tr\u01b0\u1eddng h\u1ee3p sau \u0111\u00e2y: <br\/>D\u00f2ng \u0111i\u1ec7n qua b\u00f3ng \u0111\u00e8n xe m\u00e1y c\u00f3 c\u01b0\u1eddng \u0111\u1ed9 1,2A.","select":["A. D\u00f9ng ampe k\u1ebf s\u1ed1 3 c\u00f3 gi\u1edbi h\u1ea1n \u0111o l\u00e0 0,5 A","B. D\u00f9ng ampe k\u1ebf s\u1ed1 2 c\u00f3 gi\u1edbi h\u1ea1n \u0111o l\u00e0 1,5 A","C. D\u00f9ng ampe k\u1ebf s\u1ed1 4 c\u00f3 gi\u1edbi h\u1ea1n \u0111o l\u00e0 1 A","D. D\u00f9ng ampe k\u1ebf s\u1ed1 1 c\u00f3 gi\u1edbi h\u1ea1n \u0111o l\u00e0 50 mA"],"hint":"","explain":"<span class='basic_left'>V\u00ec khi d\u00f9ng ampe k\u1ebf c\u00f3 GH\u0110 g\u1ea7n nh\u1ea5t v\u1edbi k\u1ebft qu\u1ea3 c\u1ea7n \u0111o th\u00ec s\u1ebd cho \u0111\u1ed9 ch\u00ednh x\u00e1c cao nh\u1ea5t. V\u00ec d\u00f2ng \u0111i\u1ec7n c\u1ea7n \u0111o l\u00e0 1,2A n\u00ean ta d\u00f9ng ampe k\u1ebf s\u1ed1 2 c\u00f3 gi\u1edbi h\u1ea1n \u0111o l\u00e0 1,5A.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":1}]}],"id_ques":2500},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":5,"ques":"Ampe k\u1ebf l\u00e0 d\u1ee5ng c\u1ee5 d\u00f9ng \u0111\u1ec3 l\u00e0m g\u00ec?","select":["A. \u0110\u1ec3 \u0111o ngu\u1ed3n \u0111i\u1ec7n m\u1eafc trong m\u1ea1ch \u0111i\u1ec7n l\u00e0 m\u1ea1nh hay y\u1ebfu.","B. \u0110\u1ec3 \u0111o l\u01b0\u1ee3ng electron ch\u1ea1y qua \u0111o\u1ea1n m\u1ea1ch.","C. \u0110\u1ec3 \u0111o \u0111\u1ed9 s\u00e1ng c\u1ee7a b\u00f3ng \u0111\u00e8n m\u1eafc trong m\u1ea1ch.","D. \u0110\u1ec3 \u0111o c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua \u0111o\u1ea1n m\u1ea1ch."],"hint":"","explain":"<span class='basic_left'>Ampe k\u1ebf l\u00e0 d\u1ee5ng c\u1ee5 d\u00f9ng \u0111\u1ec3 \u0111o c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua \u0111o\u1ea1n m\u1ea1ch.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 D.<\/span><\/span> ","column":1}]}],"id_ques":2501},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":"Tr\u00ean ampe k\u1ebf kh\u00f4ng c\u00f3 d\u1ea5u hi\u1ec7u n\u00e0o d\u01b0\u1edbi \u0111\u00e2y?","select":["A. Hai d\u1ea5u (+) v\u00e0 (-) ghi t\u1ea1i hai ch\u1ed1t n\u1ed1i d\u00e2y d\u1eabn.","B. S\u01a1 \u0111\u1ed3 m\u1eafc d\u1ee5ng c\u1ee5 n\u00e0y v\u00e0o m\u1ea1ch \u0111i\u1ec7n.","C. Tr\u00ean m\u1eb7t d\u1ee5ng c\u1ee5 n\u00e0y c\u00f3 ghi ch\u1eef A hay ch\u1eef mA.","D. B\u1ea3ng chia \u0111\u1ed9 cho bi\u1ebft gi\u1edbi h\u1ea1n \u0111o v\u00e0 \u0111\u1ed9 chia nh\u1ecf nh\u1ea5t."],"hint":"","explain":"<span class='basic_left'>Tr\u00ean ampe k\u1ebf kh\u00f4ng c\u00f3 s\u01a1 \u0111\u1ed3 m\u1eafc d\u1ee5ng c\u1ee5 n\u00e0y v\u00e0o m\u1ea1ch \u0111i\u1ec7n.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":1}]}],"id_ques":2502},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":"\u0110\u01a1n v\u1ecb \u0111o c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n l\u00e0 g\u00ec?","select":["A. niut\u01a1n (N) ","B. ampe(A)","C. \u0111\u00eaxiben(dB) ","D. h\u00e9c(Hz)"],"hint":"","explain":"<span class='basic_left'>\u0110\u01a1n v\u1ecb \u0111o c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n l\u00e0 ampe(A) <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":2}]}],"id_ques":2503},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":"<span class='basic_left'>D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 thao t\u00e1c, \u0111\u00fang ho\u1eb7c sai, khi s\u1eed d\u1ee5ng ampe k\u1ebf:<br\/> 1. \u0110i\u1ec1u ch\u1ec9nh kim ch\u1ec9 th\u1ecb v\u1ec1 v\u1ea1ch s\u1ed1 0;<br\/> 2. Ch\u1ecdn thang \u0111o c\u00f3 gi\u1edbi h\u1ea1n \u0111o nh\u1ecf nh\u1ea5t;<br\/> 3. M\u1eafc d\u1ee5ng c\u1ee5 \u0111o xen v\u00e0o m\u1ed9t v\u1ecb tr\u00ed c\u1ee7a m\u1ea1ch \u0111i\u1ec7n, trong \u0111\u00f3 ch\u1ed1t \u00e2m c\u1ee7a d\u1ee5ng c\u1ee5 \u0111\u01b0\u1ee3c m\u1eafc v\u1ec1 ph\u00eda c\u1ef1c d\u01b0\u01a1ng c\u1ee7a ngu\u1ed3n \u0111i\u1ec7n, c\u00f2n ch\u1ed1t d\u01b0\u01a1ng \u0111\u01b0\u1ee3c m\u1eafc v\u1ec1 ph\u00eda c\u1ef1c \u00e2m c\u1ee7a ngu\u1ed3n \u0111i\u1ec7n;<br\/> 4. \u0110\u00f3ng c\u00f4ng t\u1eafc, \u0111\u1ecdc s\u1ed1 ch\u1ec9 tr\u00ean d\u1ee5ng c\u1ee5 \u0111o theo \u0111\u00fang quy t\u1eafc;<br\/> 5. Ch\u1ecdn thang \u0111o ph\u00f9 h\u1ee3p , ngh\u0129a l\u00e0 thang \u0111o c\u1ea7n c\u00f3 gi\u1edbi h\u1ea1n \u0111o l\u1edbn g\u1ea5p kho\u1ea3ng 1,5 \u0111\u1ebfn 2 l\u1ea7n gi\u00e1 tr\u1ecb \u01b0\u1edbc l\u01b0\u1ee3ng c\u1ea7n \u0111o;<br\/> 6. M\u1eafc d\u1ee5ng c\u1ee5 \u0111o xen v\u00e0o m\u1ed9t v\u1ecb tr\u00ed c\u1ee7a m\u1ea1ch \u0111i\u1ec7n, trong \u0111\u00f3 ch\u1ed1t d\u01b0\u01a1ng c\u1ee7a d\u1ee5ng c\u1ee5 \u0111\u01b0\u1ee3c m\u1eafc v\u1ec1 ph\u00eda c\u1ef1c d\u01b0\u01a1ng c\u1ee7a ngu\u1ed3n \u0111i\u1ec7n, c\u00f2n ch\u1ed1t \u00e2m \u0111\u01b0\u1ee3c m\u1eafc v\u1ec1 ph\u00eda c\u1ef1c \u00e2m c\u1ee7a ngu\u1ed3n \u0111i\u1ec7n.<br\/> 7. Ng\u1eaft c\u00f4ng t\u1eafc, ghi l\u1ea1i gi\u00e1 tr\u1ecb v\u1eeba \u0111o \u0111\u01b0\u1ee3c;<br\/> Khi s\u1eed d\u1ee5ng ampe k\u1ebf \u0111\u1ec3 ti\u1ebfn h\u00e0nh m\u1ed9t ph\u00e9p \u0111o th\u00ec c\u1ea7n th\u1ef1c hi\u1ec7n nh\u1eefng thao t\u00e1c n\u00e0o \u0111\u00e3 n\u00eau \u1edf tr\u00ean v\u00e0 theo tr\u00ecnh t\u1ef1 n\u00e0o d\u01b0\u1edbi \u0111\u00e2y?<\/span>","select":["A. 1 \u2192 2 \u2192 3 \u2192 4 \u2192 7 ","B. 2 \u2192 6 \u2192 1 \u2192 4 \u2192 7","C. 5 \u2192 6 \u2192 1 \u2192 4 \u2192 7 ","D. 3 \u2192 1 \u2192 2 \u2192 4 \u2192 7"],"hint":"","explain":"<span class='basic_left'>Th\u1ef1c hi\u1ec7n theo tr\u00ecnh t\u1ef1 : 5 \u2192 6 \u2192 1 \u2192 4 \u2192 7 <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":2}]}],"id_ques":2504},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":5,"ques":"Khi b\u00f3ng \u0111\u00e8n pin s\u00e1ng b\u00ecnh th\u01b0\u1eddng th\u00ec d\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua n\u00f3 c\u01b0\u1eddng \u0111\u1ed9 v\u00e0o kho\u1ea3ng 0,3A. N\u00ean s\u1eed d\u1ee5ng ampe k\u1ebf c\u00f3 gi\u1edbi h\u1ea1n n\u00e0o d\u01b0\u1edbi \u0111\u00e2y l\u00e0 th\u00edch h\u1ee3p nh\u1ea5t \u0111\u1ec3 \u0111o c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n n\u00e0y?","select":["A. 0,3A","B. 1,0A","C. 250mA","D. 0,5A"],"hint":"","explain":"<span class='basic_left'>N\u00ean s\u1eed d\u1ee5ng ampe k\u1ebf c\u00f3 GH\u0110 g\u1ea7n v\u1edbi gi\u00e1 tr\u1ecb c\u1ea7n \u0111o nh\u1ea5t, v\u00e0 l\u1edbn h\u01a1n gi\u00e1 tr\u1ecb \u0111o m\u1ed9t ch\u00fat, \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 ch\u00ednh x\u00e1c cho \u0111\u1ea1i l\u01b0\u1ee3ng c\u1ea7n \u0111o.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 D.<\/span><\/span> ","column":2}]}],"id_ques":2505},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":"Ampe k\u1ebf c\u00f3 gi\u1edbi h\u1ea1n \u0111o l\u00e0 50mA ph\u00f9 h\u1ee3p \u0111\u1ec3 \u0111o c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n n\u00e0o d\u01b0\u1edbi \u0111\u00e2y?","select":["A. D\u00f2ng \u0111i\u1ec7n \u0111i qua b\u00f3ng \u0111\u00e8n pin c\u00f3 c\u01b0\u1eddng \u0111\u1ed9 0,35A.","B. D\u00f2ng \u0111i\u1ec7n \u0111i qua \u0111\u00e8n \u0111i\u00f4t ph\u00e1t quang c\u00f3 c\u01b0\u1eddng \u0111\u1ed9 l\u00e0 28mA.","C. D\u00f2ng \u0111i\u1ec7n \u0111i qua nam ch\u00e2m \u0111i\u1ec7n c\u00f3 c\u01b0\u1eddng \u0111\u1ed9 l\u00e0 0,8A.","D. D\u00f2ng \u0111i\u1ec7n \u0111i qua b\u00f3ng \u0111\u00e8n xe m\u00e1y c\u00f3 c\u01b0\u1eddng \u0111\u1ed9 l\u00e0 0,50A."],"hint":"","explain":"<span class='basic_left'>N\u00ean s\u1eed d\u1ee5ng ampe k\u1ebf c\u00f3 GH\u0110 g\u1ea7n v\u1edbi gi\u00e1 tr\u1ecb c\u1ea7n \u0111o nh\u1ea5t, v\u00e0 l\u1edbn h\u01a1n gi\u00e1 tr\u1ecb \u0111o m\u1ed9t ch\u00fat, \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 ch\u00ednh x\u00e1c cho \u0111\u1ea1i l\u01b0\u1ee3ng c\u1ea7n \u0111o. N\u00ean ampe k\u1ebf c\u00f3 gi\u1edbi h\u1ea1n \u0111o l\u00e0 50mA ph\u00f9 h\u1ee3p \u0111\u1ec3 \u0111o c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n \u0111i qua \u0111\u00e8n \u0111i\u00f4t ph\u00e1t quang c\u00f3 c\u01b0\u1eddng \u0111\u1ed9 l\u00e0 28mA.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":1}]}],"id_ques":2506},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":"<center><img src='https://www.luyenthi123.com/file/luyenthi123/lop7/vatly/bai24/lv2/img\/h1.jpg'\/><\/center>Ampe k\u1ebf trong s\u01a1 \u0111\u1ed3 m\u1ea1ch \u0111i\u1ec7n n\u00e0o d\u01b0\u1edbi \u0111\u00e2y m\u1eafc \u0111\u00fang?","select":["A. H\u00ecnh A","B. H\u00ecnh B","C. H\u00ecnh C","D. H\u00ecnh D"],"hint":"","explain":"<span class='basic_left'>Ampe k\u1ebf m\u1eafc n\u1ed1i ti\u1ebfp v\u1edbi \u0111o\u1ea1n m\u1ea1ch c\u1ea7n \u0111o d\u00f2ng \u0111i\u1ec7n, v\u00e0 c\u1ef1c d\u01b0\u01a1ng ampe k\u1ebf n\u1ed1i v\u1edbi c\u1ef1c d\u01b0\u01a1ng c\u1ee7a ngu\u1ed3n. H\u00ecnh C th\u1ecfa m\u00e3n. <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":2}]}],"id_ques":2507},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":"<center><img src='https://www.luyenthi123.com/file/luyenthi123/lop7/vatly/bai24/lv2/img\/h2.jpg'\/><\/center>Trong c\u00e1c m\u1ea1ch \u0111i\u1ec7n c\u00f3 s\u01a1 \u0111\u1ed3 d\u01b0\u1edbi \u0111\u00e2y, c\u00e1c c\u00f4ng t\u1eafc K \u1edf ch\u1ebf \u0111\u1ed9 \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n nh\u01b0 h\u00ecnh tr\u00ean. H\u1ecfi ampe k\u1ebf m\u1eafc trong s\u01a1 \u0111\u1ed3 n\u00e0o c\u00f3 ch\u1ec9 s\u1ed1 kh\u00e1c 0?","select":["A. H\u00ecnh A","B. H\u00ecnh B","C. H\u00ecnh C","D. H\u00ecnh D"],"hint":"","explain":"<span class='basic_left'>V\u00ec ampe k\u1ebf trong m\u1ea1ch \u0111i\u1ec7n h\u00ecnh A \u0111\u01b0\u1ee3c n\u1ed1i th\u00e0nh m\u1ea1ch k\u00edn n\u00ean c\u00f3 d\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 A.<\/span><\/span> ","column":2}]}],"id_ques":2508},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":"<center><img src='https://www.luyenthi123.com/file/luyenthi123/lop7/vatly/bai24/lv2/img\/h3.jpg'\/><\/center>Ampe k\u1ebf trong s\u01a1 \u0111\u1ed3 n\u00e0o \u1edf h\u00ecnh tr\u00ean \u0111\u01b0\u1ee3c m\u1eafc \u0111\u00fang \u0111\u1ec3 \u0111o c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua b\u00f3ng \u0111\u00e8n?","select":["A. H\u00ecnh A","B. H\u00ecnh B","C. H\u00ecnh C","D. H\u00ecnh D"],"hint":"","explain":"<span class='basic_left'>Ampe k\u1ebf m\u1eafc n\u1ed1i ti\u1ebfp v\u1edbi \u0111o\u1ea1n m\u1ea1ch ch\u1ee9a \u0111\u00e8n c\u1ea7n \u0111o d\u00f2ng \u0111i\u1ec7n, v\u00e0 c\u1ef1c d\u01b0\u01a1ng ampe k\u1ebf n\u1ed1i v\u1edbi c\u1ef1c d\u01b0\u01a1ng c\u1ee7a ngu\u1ed3n.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 A.<\/span><\/span> ","column":2}]}],"id_ques":2509},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":"Tr\u00ean Ampe k\u1ebf kh\u00f4ng c\u00f3 d\u1ea5u hi\u1ec7u n\u00e0o d\u01b0\u1edbi \u0111\u00e2y?","select":["A. 2 d\u1ea5u + v\u00e0 - ghi t\u1ea1i 2 ch\u1ed1t n\u1ed1i","B. Tr\u00ean m\u1eb7t d\u1ee5ng c\u1ee5 c\u00f3 ghi ch\u1eef V, mV","C. Tr\u00ean m\u1eb7t d\u1ee5ng c\u1ee5 c\u00f3 ghi ch\u1eef A, mA","D. B\u1ea3ng chia \u0111\u1ed9 cho bi\u1ebft gi\u1edbi h\u1ea1n \u0111o v\u00e0 \u0111\u1ed9 chia nh\u1ecf nh\u1ea5t"],"hint":"","explain":"<span class='basic_left'>V\u00ec nh\u1eefng k\u00ed hi\u1ec7u \u0111\u00f3 ch\u1ec9 c\u00f3 tr\u00ean V\u00f4n k\u1ebf, kh\u00f4ng c\u00f3 tr\u00ean Ampe k\u1ebf.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":1}]}],"id_ques":2510}],"lesson":{"save":0,"level":2}}