{"segment":[{"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":"Khi cho d\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua cu\u1ed9n d\u00e2y d\u1eabn quanh l\u00f5i s\u1eaft non th\u00ec cu\u1ed9n d\u00e2y n\u00e0y c\u00f3 th\u1ec3 h\u00fat:","select":["A. c\u00e1c v\u1ee5n nh\u00f4m.","B. c\u00e1c v\u1ee5n s\u1eaft.","C. c\u00e1c v\u1ee5n \u0111\u1ed3ng.","D. c\u00e1c v\u1ee5n gi\u1ea5y vi\u1ebft."],"hint":"","explain":"<span class='basic_left'>Khi cho d\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua cu\u1ed9n d\u00e2y d\u1eabn quanh l\u00f5i s\u1eaft non th\u00ec cu\u1ed9n d\u00e2y c\u00f3 t\u1eeb t\u00ednh v\u00e0 c\u00f3 th\u1ec3 h\u00fat \u0111\u01b0\u1ee3c s\u1eaft.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":2}]}],"id_ques":2471},{"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":"Chu\u00f4ng \u0111i\u1ec7n ho\u1ea1t \u0111\u1ed9ng l\u00e0 do:","select":["A. t\u00e1c d\u1ee5ng nhi\u1ec7t c\u1ee7a d\u00f2ng \u0111i\u1ec7n","B. t\u00e1c d\u1ee5ng t\u1eeb c\u1ee7a th\u1ecfi nam ch\u00e2m ( nam ch\u00e2m v\u0129nh c\u1eedu) g\u1eafn trong chu\u00f4ng \u0111i\u1ec7n","C. t\u00e1c d\u1ee5ng t\u1eeb c\u1ee7a d\u00f2ng \u0111i\u1ec7n","D. t\u00e1c d\u1ee5ng h\u00fat v\u00e0 \u0111\u1ea9y c\u1ee7a c\u00e1c v\u1eadt b\u1ecb nhi\u1ec5m \u0111i\u1ec7n"],"hint":"","explain":"<span class='basic_left'>Chu\u00f4ng \u0111i\u1ec7n ho\u1ea1t \u0111\u1ed9ng l\u00e0 do t\u00e1c d\u1ee5ng t\u1eeb c\u1ee7a d\u00f2ng \u0111i\u1ec7n.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":1}]}],"id_ques":2472},{"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":"T\u00e1c d\u1ee5ng ho\u00e1 h\u1ecdc c\u1ee7a d\u00f2ng \u0111i\u1ec7n khi \u0111i qua dung d\u1ecbch mu\u1ed1i \u0111\u1ed3ng sunfat \u0111\u01b0\u1ee3c bi\u1ec3u hi\u1ec7n \u1edf ch\u1ed7:","select":["A. l\u00e0m dung d\u1ecbch n\u00e0y n\u00f3ng l\u00ean","B. l\u00e0m dung d\u1ecbch n\u00e0y bay h\u01a1i nhanh h\u01a1n","C. l\u00e0m bi\u1ebfn m\u00e0u c\u1ee7a hai th\u1ecfi than n\u1ed1i v\u1edbi hai c\u1ef1c c\u1ee7a ngu\u1ed3n \u0111i\u1ec7n \u0111\u01b0\u1ee3c nh\u00fang trong dung d\u1ecbch n\u00e0y","D. l\u00e0m bi\u1ebfn m\u00e0u th\u1ecfi than n\u1ed1i v\u1edbi c\u1ef1c \u00e2m c\u1ee7a ngu\u1ed3n \u0111i\u1ec7n \u0111\u01b0\u1ee3c nh\u00fang trong dung d\u1ecbch n\u00e0y"],"hint":"","explain":"<span class='basic_left'>T\u00e1c d\u1ee5ng ho\u00e1 h\u1ecdc c\u1ee7a d\u00f2ng \u0111i\u1ec7n khi \u0111i qua dung d\u1ecbch mu\u1ed1i \u0111\u1ed3ng sunfat \u0111\u01b0\u1ee3c bi\u1ec3u hi\u1ec7n \u1edf ch\u1ed7 l\u00e0m bi\u1ebfn m\u00e0u th\u1ecfi than n\u1ed1i v\u1edbi c\u1ef1c \u00e2m c\u1ee7a ngu\u1ed3n \u0111i\u1ec7n \u0111\u01b0\u1ee3c nh\u00fang trong dung d\u1ecbch n\u00e0y. Do sinh ra \u0111\u1ed3ng b\u00e1m v\u00e0o c\u1ef1c \u00e2m.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 D.<\/span><\/span> ","column":1}]}],"id_ques":2473},{"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":"<center><img src='https://www.luyenthi123.com/file/luyenthi123/lop7/vatly/bai23/lv2/img\/h0.jpg'\/><\/center>H\u00e3y n\u1ed1i m\u1ed7i \u0111i\u1ec3m \u1edf c\u1ed9t b\u00ean tr\u00e1i v\u1edbi m\u1ed9t \u0111i\u1ec3m \u1edf c\u1ed9t b\u00ean ph\u1ea3i trong khung \u0111\u1ec3 ch\u1ec9 ra s\u1ef1 ph\u00f9 h\u1ee3p n\u1ed9i dung gi\u1eefa ch\u00fang:","select":["A. 1-a, 2-c, 3-b, 4-e, 5-d","B. 1-e, 2-d, 3-b, 4-a, 5-c","C. 1-e, 2-d, 3-b, 4-c, 5-a","D. 1-d, 2-e, 3-b, 4-a, 5-c"],"hint":"","explain":"<span class='basic_left'>\u0110\u00e1p \u00e1n \u0111\u00fang l\u00e0 :1-e, 2-d, 3-b, 4-a, 5-c<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":2}]}],"id_ques":2474},{"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":"Ho\u1ea1t \u0111\u1ed9ng c\u1ee7a d\u1ee5ng c\u1ee5 n\u00e0o d\u01b0\u1edbi \u0111\u00e2y d\u1ef1a tr\u00ean t\u00e1c d\u1ee5ng t\u1eeb c\u1ee7a d\u00f2ng \u0111i\u1ec7n?","select":["A. \u1ea4m \u0111i\u1ec7n","B. Qu\u1ea1t \u0111i\u1ec7n","C. \u0110\u00e8n LED ","D. N\u1ed3i c\u01a1m \u0111i\u1ec7n"],"hint":"","explain":"<span class='basic_left'>Ho\u1ea1t \u0111\u1ed9ng c\u1ee7a qu\u1ea1t \u0111i\u1ec7n d\u1ef1a tr\u00ean t\u00e1c d\u1ee5ng t\u1eeb c\u1ee7a d\u00f2ng \u0111i\u1ec7n, l\u00e0m quay c\u00e1nh qu\u1ea1t.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":2}]}],"id_ques":2475},{"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\u1ea7n c\u1ea9u d\u00f9ng nam ch\u00e2m \u0111i\u1ec7n ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean t\u00e1c d\u1ee5ng n\u00e0o c\u1ee7a d\u00f2ng \u0111i\u1ec7n?","select":["A. T\u00e1c d\u1ee5ng nhi\u1ec7t ","B. T\u00e1c d\u1ee5ng ph\u00e1t s\u00e1ng","C. T\u00e1c d\u1ee5ng t\u1eeb ","D. T\u00e1c d\u1ee5ng ho\u00e1 h\u1ecdc"],"hint":"","explain":"<span class='basic_left'>C\u1ea7n c\u1ea9u d\u00f9ng nam ch\u00e2m \u0111i\u1ec7n ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean t\u00e1c d\u1ee5ng t\u1eeb c\u1ee7a d\u00f2ng \u0111i\u1ec7n. Khi c\u1ea5p \u0111i\u1ec7n v\u00e0o cu\u1ed9n d\u00e2y c\u00f3 l\u00f5i s\u1eaft non, n\u00f3 tr\u1edf th\u00e0nh m\u1ed9t nam ch\u00e2m \u0111i\u1ec7n, khi ng\u1eaft \u0111i\u1ec7n th\u00ec n\u00f3 kh\u00f4ng c\u00f2n l\u00e0 nam ch\u00e2m \u0111i\u1ec7n n\u1eefa. <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":2}]}],"id_ques":2476},{"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":"\u0110\u1ec3 m\u1ea1 b\u1ea1c m\u1ed9t c\u00e1i h\u1ed9p b\u1eb1ng \u0111\u1ed3ng th\u00ec l\u00e0m theo c\u00e1ch n\u00e0o d\u01b0\u1edbi \u0111\u00e2y?","select":["A. N\u1ed1i h\u1ed9p v\u1edbi c\u1ef1c d\u01b0\u01a1ng c\u1ee7a ngu\u1ed3n \u0111i\u1ec7n r\u1ed3i nh\u00fang h\u1ed9p ng\u1eadp trong dung d\u1ecbch mu\u1ed1i b\u1ea1c.","B. N\u1ed1i h\u1ed9p v\u1edbi c\u1ef1c \u00e2m c\u1ee7a ngu\u1ed3n \u0111i\u1ec7n r\u1ed3i nh\u00fang h\u1ed9p ng\u1eadp trong dung d\u1ecbch mu\u1ed1i b\u1ea1c.","C. N\u1ed1i m\u1ed9t th\u1ecfi b\u1ea1c v\u1edbi c\u1ef1c \u00e2m c\u1ee7a ngu\u1ed3n \u0111i\u1ec7n v\u00e0 n\u1ed1i h\u1ed9p v\u1edbi c\u1ef1c d\u01b0\u01a1ng c\u1ee7a ngu\u1ed3n, r\u1ed3i nh\u00fang th\u1ecfi b\u1ea1c v\u00e0 h\u1ed9p ng\u1eadp trong dung d\u1ecbch mu\u1ed1i b\u1ea1c \u0111\u1ec3 cho d\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua dung d\u1ecbch n\u00e0y.","D. N\u1ed1i m\u1ed9t th\u1ecfi b\u1ea1c v\u1edbi c\u1ef1c d\u01b0\u01a1ng c\u1ee7a ngu\u1ed3n \u0111i\u1ec7n v\u00e0 n\u1ed1i h\u1ed9p v\u1edbi c\u1ef1c \u00e2m c\u1ee7a ngu\u1ed3n, r\u1ed3i nh\u00fang th\u1ecfi b\u1ea1c v\u00e0 h\u1ed9p ng\u1eadp trong dung d\u1ecbch mu\u1ed1i b\u1ea1c \u0111\u1ec3 cho d\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua dung d\u1ecbch n\u00e0y."],"hint":"","explain":"<span class='basic_left'>\u0110\u1ec3 m\u1ea1 b\u1ea1c m\u1ed9t c\u00e1i h\u1ed9p b\u1eb1ng \u0111\u1ed3ng th\u00ec n\u1ed1i m\u1ed9t th\u1ecfi b\u1ea1c v\u1edbi c\u1ef1c d\u01b0\u01a1ng c\u1ee7a ngu\u1ed3n \u0111i\u1ec7n v\u00e0 n\u1ed1i h\u1ed9p v\u1edbi c\u1ef1c \u00e2m c\u1ee7a ngu\u1ed3n, r\u1ed3i nh\u00fang th\u1ecfi b\u1ea1c v\u00e0 h\u1ed9p ng\u1eadp trong dung d\u1ecbch mu\u1ed1i b\u1ea1c \u0111\u1ec3 cho d\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua dung d\u1ecbch n\u00e0y. Khi \u0111\u00f3 b\u1ea1c \u0111\u01b0\u1ee3c \u0111i\u1ec7n ph\u00e2n s\u1ebd sinh ra v\u00e0 b\u00e1m v\u00e0o m\u1eb7t ngo\u00e0i c\u1ee7a h\u1ed9p t\u1ea1o th\u00e0nh l\u1edbp m\u1ea1.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 D.<\/span><\/span> ","column":1}]}],"id_ques":2477},{"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":"L\u00e0m theo c\u00e1ch n\u00e0o d\u01b0\u1edbi \u0111\u00e2y khi ch\u00fa \u00fd t\u1edbi t\u00e1c d\u1ee5ng sinh l\u00ed c\u1ee7a d\u00f2ng \u0111i\u1ec7n?","select":["A. Kh\u00f4ng s\u1eed d\u1ee5ng b\u1ea5t c\u1ee9 m\u1ed9t d\u1ee5ng c\u1ee5 \u0111i\u1ec7n n\u00e0o, v\u00ec d\u00f2ng \u0111i\u1ec7n c\u00f3 th\u1ec3 g\u00e2y nguy hi\u1ec3m t\u1edbi t\u00ednh m\u1ea1nh con ng\u01b0\u1eddi.","B. S\u1eed d\u1ee5ng tu\u1ef3 \u00fd m\u1ecdi d\u1ee5ng c\u1ee5 \u0111i\u1ec7n, kh\u00f4ng c\u1ea7n tr\u00e1nh vi\u1ec7c d\u00f2ng \u0111i\u1ec7n c\u00f3 th\u1ec3 \u0111i qua c\u01a1 th\u1ec3 ng\u01b0\u1eddi.","C. Ch\u1ec9 s\u1eed d\u1ee5ng d\u00f2ng \u0111i\u1ec7n khi c\u1ea7n ch\u1eefa m\u1ed9t s\u1ed1 b\u1ec7nh.","D. S\u1eed d\u1ee5ng c\u00e1c d\u1ee5ng c\u1ee5 \u0111i\u1ec7n khi c\u1ea7n thi\u1ebft v\u00e0 ch\u00fa \u00fd \u0111\u1ea3m b\u1ea3o an to\u00e0n v\u1ec1 \u0111i\u1ec7n."],"hint":"","explain":"<span class='basic_left'>S\u1eed d\u1ee5ng c\u00e1c d\u1ee5ng c\u1ee5 \u0111i\u1ec7n khi c\u1ea7n thi\u1ebft v\u00e0 ch\u00fa \u00fd \u0111\u1ea3m b\u1ea3o an to\u00e0n v\u1ec1 \u0111i\u1ec7n.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 D.<\/span><\/span> ","column":1}]}],"id_ques":2478},{"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":"Trong c\u00e1c li\u1ec7t k\u00ea d\u01b0\u1edbi \u0111\u00e2y, li\u1ec7t k\u00ea n\u00e0o g\u1ed3m to\u00e0n c\u00e1c d\u1ee5ng c\u1ee5 \u0111i\u1ec7n m\u00e0 ho\u1ea1t \u0111\u1ed9ng c\u1ee7a ch\u00fang d\u1ef1a ch\u1ee7 y\u1ebfu v\u00e0o t\u00e1c d\u1ee5ng c\u1ee7a d\u00f2ng \u0111i\u1ec7n?","select":["A. M\u00e1y t\u00ednh c\u00e1 nh\u00e2n, qu\u1ea1t \u0111i\u1ec7n, ra\u0111i\u00f4, tivi.","B. M\u00e1y b\u01a1m n\u01b0\u1edbc, qu\u1ea1t \u0111i\u1ec7n, c\u1ea7n c\u1ea9u \u0111i\u1ec7n, chu\u00f4ng \u0111i\u1ec7n.","C. \u0110i\u1ec7n tho\u1ea1i di \u0111\u1ed9ng, m\u00e1y t\u00ednh b\u1ecf t\u00fai, m\u00e1y ch\u1ee5p \u1ea3nh t\u1ef1 \u0111\u1ed9ng, chu\u00f4ng \u0111i\u1ec7n.","D. B\u00fat th\u1eed \u0111i\u1ec7n, b\u00f3ng \u0111\u00e8n d\u00e2y t\u00f3c, b\u00e0n l\u00e0, l\u00f2 s\u01b0\u1edfi \u0111i\u1ec7n."],"hint":"","explain":"<span class='basic_left'>M\u00e1y b\u01a1m n\u01b0\u1edbc, qu\u1ea1t \u0111i\u1ec7n, c\u1ea7n c\u1ea9u \u0111i\u1ec7n, chu\u00f4ng \u0111i\u1ec7n ch\u00fang ho\u1ea1t \u0111\u1ed9ng d\u1ef1a ch\u1ee7 y\u1ebfu v\u00e0o t\u00e1c d\u1ee5ng c\u1ee7a d\u00f2ng \u0111i\u1ec7n.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":1}]}],"id_ques":2479},{"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/bai23/lv2/img\/h1.jpg'\/><\/center>Ch\u1ecdn c\u00e2u \u0111\u00fang trong s\u1ed1 c\u00e1c c\u00e2u tr\u00ean:","select":["A. C\u00e2u \u0111\u00fang: a, g.","B. C\u00e2u \u0111\u00fang: a, b.","C. C\u00e2u \u0111\u00fang: c, a","D. T\u1ea5t c\u1ea3 \u0111\u1ec1u \u0111\u00fang"],"hint":"","explain":"<span class='basic_left'>M\u1ecdi cu\u1ed9n d\u00e2y d\u1eabn khi c\u00f3 d\u00f2ng \u0111i\u1ec7n \u0111i qua \u0111\u1ec1u tr\u1edf th\u00e0nh nam ch\u00e2m \u0111i\u1ec7n.<br\/>Cho d\u00f2ng \u0111i\u1ec7n th\u00edch h\u1ee3p \u0111i qua c\u01a1 th\u1ec3 ng\u01b0\u1eddi c\u00f3 th\u1ec3 ch\u1eefa \u0111\u01b0\u1ee3c m\u1ed9t s\u1ed1 b\u1ec7nh.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 A.<\/span><\/span> ","column":2}]}],"id_ques":2480},{"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":"<center><img src='https://www.luyenthi123.com/file/luyenthi123/lop7/vatly/bai23/lv2/img\/h2.jpg'\/><\/center>H\u00e3y gh\u00e9p m\u1ed9t \u0111o\u1ea1n c\u00e2u \u1edf c\u1ed9t b\u00ean tr\u00e1i v\u1edbi m\u1ed9t \u0111o\u1ea1n c\u00e2u \u1edf c\u1ed9t b\u00ean ph\u1ea3i \u0111\u1ec3 th\u00e0nh m\u1ed9t c\u00e2u ho\u00e0n ch\u1ec9nh c\u00f3 n\u1ed9i dung \u0111\u00fang:","select":["A. 1.d 2.e 3.c 4.b 5.a","B. 1.d 2.c 3.e 4.b 5.a","C. 1.d 2.c 3.a 4.b 5.e","D. 1.a 2.c 3.e 4.b 5.d"],"hint":"","explain":"<span class='basic_left'><br\/> <span class='basic_pink'>\u0110\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":2}]}],"id_ques":2481},{"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":"Trong c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n trong gia \u0111\u00ecnh, \u0111iot ph\u00e1t quang c\u00f3 th\u1ec3 c\u00f3 trong c\u00e1c thi\u1ebft b\u1ecb n\u00e0o sau \u0111\u00e2y?","select":["A. \u0110\u00e8n b\u00e1o tr\u00ean TV","B. \u0110\u00e8n b\u00e1o tr\u00ean \u1ed5n \u00e1p","C. \u0110\u00e8n b\u00e1o tr\u00ean m\u00e1y t\u00ednh","D. C\u1ea3 ba c\u00e2u \u0111\u1ec1u \u0111\u00fang"],"hint":"","explain":"<span class='basic_left'>\u0110iot ph\u00e1t quang c\u00f3 th\u1ec3 c\u00f3 trong c\u00e1c lo\u1ea1i \u0111\u00e8n b\u00e1o c\u1ee7a thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 D.<\/span><\/span> ","column":2}]}],"id_ques":2482},{"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\u1ea7u ch\u00ec c\u00f3 t\u00e1c d\u1ee5ng g\u00ec trong m\u1ea1ch \u0111i\u1ec7n \u1edf nh\u00e0?","select":["A. Ng\u1eaft m\u1ea1ch \u0111i\u1ec7n khi c\u00f3 s\u1ef1 c\u1ed1 ch\u1eadp \u0111i\u1ec7n","B. Trang tr\u00ed cho \u0111\u1eb9p c\u00e1c b\u1ea3ng \u0111i\u1ec7n","C. B\u1ea3o v\u1ec7 an to\u00e0n cho c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n","D. Ng\u1eaft m\u1ea1ch \u0111i\u1ec7n khi c\u00f3 s\u1ef1 c\u1ed1 ch\u1eadp \u0111i\u1ec7n v\u00e0 b\u1ea3o v\u1ec7 an to\u00e0n cho c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n"],"hint":"","explain":"<span class='basic_left'>C\u1ea7u ch\u00ec c\u00f3 t\u00e1c d\u1ee5ng ng\u1eaft m\u1ea1ch \u0111i\u1ec7n khi c\u00f3 s\u1ef1 c\u1ed1 ch\u1eadp \u0111i\u1ec7n v\u00e0 b\u1ea3o v\u1ec7 an to\u00e0n cho c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 D.<\/span><\/span> ","column":1}]}],"id_ques":2483},{"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":"B\u0103ng k\u00e9p ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean t\u00e1c d\u1ee5ng g\u00ec c\u1ee7a d\u00f2ng \u0111i\u1ec7n?","select":["A. T\u00e1c d\u1ee5ng ph\u00e1t s\u00e1ng","B. T\u00e1c d\u1ee5ng nhi\u1ec7t","C. T\u00e1c d\u1ee5ng t\u1eeb","D. T\u00e1c d\u1ee5ng h\u00f3a h\u1ecdc"],"hint":"","explain":"<span class='basic_left'>B\u0103ng k\u00e9p ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean t\u00e1c d\u1ee5ng nhi\u1ec7t c\u1ee7a d\u00f2ng \u0111i\u1ec7n, s\u1eed d\u1ee5ng v\u1edbi hai kim lo\u1ea1i c\u00f3 \u0111\u1ed9 gi\u00e3n n\u1edf nhi\u1ec7t kh\u00e1c nhau. <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":2}]}],"id_ques":2484},{"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":"Quan s\u00e1t b\u1ebfp \u0111i\u1ec7n khi ho\u1ea1t \u0111\u1ed9ng v\u00e0 cho bi\u1ebft c\u00f3 nh\u1eefng t\u00e1c d\u1ee5ng n\u00e0o c\u1ee7a d\u00f2ng \u0111i\u1ec7n?","select":["A. T\u00e1c d\u1ee5ng t\u1eeb","B. T\u00e1c d\u1ee5ng nhi\u1ec7t","C. T\u00e1c d\u1ee5ng ph\u00e1t s\u00e1ng","D. C\u1ea3 B,C \u0111\u1ec1u \u0111\u00fang"],"hint":"","explain":"<span class='basic_left'>T\u00e1c d\u1ee5ng nhi\u1ec7t l\u00e0 ch\u00ednh, t\u00e1c d\u1ee5ng ph\u00e1t s\u00e1ng \u1edf c\u00e1c \u0111\u00e8n b\u00e1o.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 D.<\/span><\/span> ","column":2}]}],"id_ques":2485},{"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":"D\u00f9ng 1 s\u1ee3i d\u00e2y \u0111\u1ed3ng n\u1ed1i li\u1ec1n 2 c\u1ef1c c\u1ee7a 1 c\u1ee5c pin c\u00f2n \u0111ang s\u1eed d\u1ee5ng. C\u1ee5c bin s\u1ebd n\u00f3ng d\u1ea7n l\u00ean. \u0110i\u1ec1u n\u00e0y l\u00e0 do t\u00e1c d\u1ee5ng n\u00e0o c\u1ee7a d\u00f2ng \u0111i\u1ec7n?","select":["A. T\u00e1c d\u1ee5ng t\u1eeb","B. T\u00e1c d\u1ee5ng nhi\u1ec7t","C. T\u00e1c d\u1ee5ng h\u00f3a h\u1ecdc","D. T\u00e1c d\u1ee5ng sinh l\u00fd"],"hint":"","explain":"<span class='basic_left'>C\u1ee5c bin s\u1ebd n\u00f3ng d\u1ea7n l\u00ean. \u0110i\u1ec1u n\u00e0y l\u00e0 do t\u00e1c d\u1ee5ng nhi\u1ec7t c\u1ee7a d\u00f2ng \u0111i\u1ec7n.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":2}]}],"id_ques":2486},{"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":"Chu\u00f4ng \u0111i\u1ec7n ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean t\u00e1c d\u1ee5ng n\u00e0o c\u1ee7a d\u00f2ng \u0111i\u1ec7n?","select":["A. T\u00e1c d\u1ee5ng ph\u00e1t s\u00e1ng","B. T\u00e1c d\u1ee5ng nhi\u1ec7t","C. T\u00e1c d\u1ee5ng t\u1eeb","D. T\u00e1c d\u1ee5ng h\u00f3a h\u1ecdc"],"hint":"","explain":"<span class='basic_left'>Chu\u00f4ng \u0111i\u1ec7n ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean t\u00e1c d\u1ee5ng t\u1eeb c\u1ee7a d\u00f2ng \u0111i\u1ec7n.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":2}]}],"id_ques":2487},{"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":"T\u00e1c d\u1ee5ng sinh l\u00fd c\u1ee7a d\u00f2ng \u0111i\u1ec7n khi \u0111i qua c\u01a1 th\u1ec3 ng\u01b0\u1eddi l\u00e0? ","select":["A. L\u00e0m c\u00e1c c\u01a1 co gi\u1eadt","B. L\u00e0m tim ng\u1eebng \u0111\u1eadp","C. L\u00e0m t\u00ea li\u1ec7t th\u1ea7n kinh","D. C\u1ea3 ba c\u00e2u tr\u00ean \u0111\u00fang"],"hint":"","explain":"<span class='basic_left'>T\u00e1c d\u1ee5ng sinh l\u00fd c\u1ee7a d\u00f2ng \u0111i\u1ec7n khi \u0111i qua c\u01a1 th\u1ec3 ng\u01b0\u1eddi l\u00e0: l\u00e0m c\u00e1c c\u01a1 co gi\u1eadt, l\u00e0m tim ng\u1eebng \u0111\u1eadp v\u00e0 l\u00e0m t\u00ea li\u1ec7t th\u1ea7n kinh.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 D.<\/span><\/span> ","column":2}]}],"id_ques":2488},{"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":"Trong qu\u00e1 tr\u00ecnh s\u1ea1c pin cho \u0111i\u1ec7n tho\u1ea1i di \u0111\u1ed9ng. D\u00f2ng \u0111i\u1ec7n c\u00f3 c\u00e1c t\u00e1c d\u1ee5ng g\u00ec?","select":["A. T\u00e1c d\u1ee5ng nhi\u1ec7t","B. T\u00e1c d\u1ee5ng t\u1eeb","C. T\u00e1c d\u1ee5ng h\u00f3a h\u1ecdc","D. T\u00e1c d\u1ee5ng nhi\u1ec7t v\u00e0 h\u00f3a h\u1ecdc"],"hint":"","explain":"<span class='basic_left'>Trong qu\u00e1 tr\u00ecnh s\u1ea1c pin cho \u0111i\u1ec7n tho\u1ea1i di \u0111\u1ed9ng. D\u00f2ng \u0111i\u1ec7n c\u00f3 c\u00e1c t\u00e1c d\u1ee5ng nhi\u1ec7t v\u00e0 t\u00e1c d\u1ee5ng h\u00f3a h\u1ecdc, l\u01b0u tr\u1eef n\u0103ng l\u01b0\u1ee3ng d\u01b0\u1edbi d\u1ea1ng h\u00f3a n\u0103ng trong pin.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 D.<\/span><\/span> ","column":2}]}],"id_ques":2489},{"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 s\u1eed d\u1ee5ng d\u1ee5ng c\u1ee5 \u0111i\u1ec7n sinh ho\u1ea1t, c\u1ea7n l\u01b0u \u00fd nh\u1eefng g\u00ec \u0111\u1ec3 tr\u00e1nh b\u1ecb \u0111i\u1ec7n gi\u1eadt?","select":["A. T\u1ea5t c\u1ea3 c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n ph\u1ea3i \u0111\u01b0\u1ee3c c\u00e1ch \u0111i\u1ec7n, d\u00e2y d\u1eabn ph\u1ea3i \u0111\u01b0\u1ee3c b\u1ecdc b\u1eb1ng v\u00e2t li\u1ec7u c\u00e1ch \u0111i\u1ec7n.","B. Kh\u00f4ng ti\u1ebfp x\u00fac tr\u1ef1c ti\u1ebfp v\u1edbi c\u00e1c b\u1ed9 ph\u1eadn d\u1eabn \u0111i\u1ec7n, nh\u01b0 \u0111\u1ea7u ph\u00edch c\u1eafm (trong qu\u00e1 tr\u00ecnh c\u1eafm \u0111i\u1ec7n), \u1ed5 \u0111i\u1ec7n, m\u1ea1ch \u0111i\u1ec7n khi \u0111ang c\u00f3 d\u00f2ng \u0111i\u1ec7n","C. Khi s\u1eeda ch\u1eefa, l\u1eafp r\u00e1p tuy\u1ec7t \u0111\u1ed1i ph\u1ea3i tu\u00e2n theo quy t\u1eafc an to\u00e0n \u0111i\u1ec7n.","D. T\u1ea5t c\u1ea3 c\u00e1c \u00fd tr\u00ean"],"hint":"","explain":"<span class='basic_left'>Ph\u1ea3i \u0111\u1ea3m b\u1ea3o tu\u00e2n th\u1ee7 nghi\u00eam ng\u1eb7t nh\u1eefng quy \u0111\u1ecbnh v\u1ec1 an to\u00e0n \u0111i\u1ec7n v\u00e0 c\u00e1ch \u0111i\u1ec7n trong sinh ho\u1ea1t v\u00e0 \u0111\u1eddi s\u1ed1ng.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 D.<\/span><\/span> ","column":1}]}],"id_ques":2490}],"lesson":{"save":0,"level":2}}