{"common":{"save":0,"post_id":"8252","level":1,"total":10,"point":10,"point_extra":0},"segment":[{"id":"9391","post_id":"8252","mon_id":"1159533","chapter_id":"1159663","question":"<p>C&ocirc;ng th\u1ee9c t&iacute;nh n\u0103ng l\u01b0\u1ee3ng ti&ecirc;u th\u1ee5 c\u1ee7a d&ograve;ng \u0111i\u1ec7n l&agrave;:<\/p>","options":["A. <span class=\"math-tex\">$A = U.I.t$<\/span>","B. <span class=\"math-tex\">$A = U + I + t$<\/span>","C. <span class=\"math-tex\">$A = U.I$<\/span>","D. <span class=\"math-tex\">$A = {U \\over I.t}$<\/span>"],"correct":"1","level":"1","hint":"","answer":"<p>\u0110&aacute;p &aacute;n:&nbsp;A.&nbsp;<span class=\"math-tex\">$A = U.I.t$<\/span><\/p><p>Gi\u1ea3i th&iacute;ch:&nbsp;<\/p><p>N\u0103ng l\u01b0\u1ee3ng ti&ecirc;u th\u1ee5 (c&ocirc;ng c\u1ee7a d&ograve;ng \u0111i\u1ec7n) \u0111\u01b0\u1ee3c t&iacute;nh b\u1eb1ng c&ocirc;ng th\u1ee9c:&nbsp;<span class=\"math-tex\">$A = U.I.t$<\/span><\/p><p>trong \u0111&oacute;:<\/p><p>-&nbsp;<span class=\"math-tex\">$U$<\/span>: hi\u1ec7u \u0111i\u1ec7n th\u1ebf (V)<\/p><p>-&nbsp;<span class=\"math-tex\">$I$<\/span>: c\u01b0\u1eddng \u0111\u1ed9 d&ograve;ng \u0111i\u1ec7n (A)<\/p><p>-&nbsp;<span class=\"math-tex\">$t$<\/span>: th\u1eddi gian d&ograve;ng \u0111i\u1ec7n ch\u1ea1y (s)<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"125","test":"0","date":"2024-12-28 10:34:23","option_type":"math","len":0},{"id":"9392","post_id":"8252","mon_id":"1159533","chapter_id":"1159663","question":"<p>\u0110\u01a1n v\u1ecb c\u1ee7a c&ocirc;ng su\u1ea5t \u0111i\u1ec7n l&agrave; g&igrave;?<\/p>","options":["A. o&aacute;t (W)","B. Jun (J)","C. V&ocirc;n (V)","D. Ampe (A)"],"correct":"1","level":"1","hint":"","answer":"<p>\u0110&aacute;p &aacute;n: A. o&aacute;t (W)<\/p><p>Gi\u1ea3i th&iacute;ch:<\/p><p>C&ocirc;ng su\u1ea5t \u0111i\u1ec7n \u0111\u01b0\u1ee3c \u0111o b\u1eb1ng \u0111\u01a1n v\u1ecb o&aacute;t (W), bi\u1ec3u th\u1ecb n\u0103ng l\u01b0\u1ee3ng ti&ecirc;u th\u1ee5 trong m\u1ed9t gi&acirc;y.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"125","test":"0","date":"2024-12-28 10:36:31","option_type":"txt","len":2},{"id":"9393","post_id":"8252","mon_id":"1159533","chapter_id":"1159663","question":"<p>C&ocirc;ng su\u1ea5t \u0111i\u1ec7n cho bi\u1ebft \u0111i\u1ec1u g&igrave; thi\u1ebft b\u1ecb \u0111i\u1ec7n?<\/p>","options":["A. Hi\u1ec7u \u0111i\u1ec7n th\u1ebf m&agrave; thi\u1ebft b\u1ecb s\u1eed d\u1ee5ng.","B. C\u01b0\u1eddng \u0111\u1ed9 d&ograve;ng \u0111i\u1ec7n qua thi\u1ebft b\u1ecb.","C. N\u0103ng l\u01b0\u1ee3ng ti&ecirc;u th\u1ee5 trong m\u1ed9t gi&acirc;y c\u1ee7a thi\u1ebft b\u1ecb.","D. Th\u1eddi gian ho\u1ea1t \u0111\u1ed9ng c\u1ee7a thi\u1ebft b\u1ecb."],"correct":"3","level":"1","hint":"","answer":"<p>\u0110&aacute;p &aacute;n: C. N\u0103ng l\u01b0\u1ee3ng ti&ecirc;u th\u1ee5 trong m\u1ed9t gi&acirc;y c\u1ee7a thi\u1ebft b\u1ecb.<br \/>Gi\u1ea3i th&iacute;ch:<br \/>C&ocirc;ng su\u1ea5t \u0111i\u1ec7n l&agrave; n\u0103ng l\u01b0\u1ee3ng ti&ecirc;u th\u1ee5 c\u1ee7a thi\u1ebft b\u1ecb \u0111i\u1ec7n trong m\u1ed9t gi&acirc;y, \u0111\u01a1n v\u1ecb l&agrave; ????.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"125","test":"0","date":"2024-12-28 10:38:41","option_type":"txt","len":3}]}