{"common":{"save":0,"post_id":"6352","level":1,"total":10,"point":10,"point_extra":0},"segment":[{"id":"10013","post_id":"6352","mon_id":"1158739","chapter_id":"1158841","question":"<p>T\u1eeb tr\u01b0\u1eddng c\u1ee7a nam châm \u0111i\u1ec7n ch\u1ec9 t\u1ed3n t\u1ea1i trong th\u1eddi gian nào?<\/p>","options":["A. Ch\u1ec9 t\u1ed3n t\u1ea1i trong th\u1eddi gian dòng \u0111i\u1ec7n ch\u1ea1y trong \u1ed1ng dây.","B. Ch\u1ec9 t\u1ed3n t\u1ea1i trong th\u1eddi gian sau khi ng\u1eaft dòng \u0111i\u1ec7n.","C. Ch\u1ec9 t\u1ed3n t\u1ea1i trong th\u1eddi gian tr\u01b0\u1edbc lúc \u0111óng ngu\u1ed3n \u0111i\u1ec7n.","D. C\u1ea3 B và C.<br \/>\n "],"correct":"1","level":"1","hint":"","answer":"<p>T\u1eeb tr\u01b0\u1eddng c\u1ee7a nam châm \u0111i\u1ec7n ch\u1ec9 t\u1ed3n t\u1ea1i trong th\u1eddi gian dòng \u0111i\u1ec7n ch\u1ea1y trong \u1ed1ng dây.<br \/><span style=\"color:#27ae60;\"><strong>\u0110áp án \u0111úng: A. Ch\u1ec9 t\u1ed3n t\u1ea1i trong th\u1eddi gian dòng \u0111i\u1ec7n ch\u1ea1y trong \u1ed1ng dây.<\/strong><\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"147","test":"0","date":"2022-10-27 09:52:10","option_type":"txt","len":3},{"id":"10014","post_id":"6352","mon_id":"1158739","chapter_id":"1158841","question":"<p>C\u1ea5u t\u1ea1o c\u1ee7a nam châm \u0111i\u1ec7n g\u1ed3m nh\u1eefng b\u1ed9 ph\u1eadn chính nào?<\/p>","options":["A. \u1ed0ng dây, lõi s\u1eaft và k\u1eb9p gi\u1ea5y.","B. \u1ed0ng dây và k\u1eb9p gi\u1ea5y.","C. Lõi s\u1eaft và k\u1eb9p gi\u1ea5y.","D. \u1ed0ng dây và lõi s\u1eaft."],"correct":"4","level":"1","hint":"","answer":"<p>Nam châm \u0111i\u1ec7n g\u1ed3m \u1ed1ng dây và lõi s\u1eaft.<br \/><span style=\"color:#27ae60;\"><strong>\u0110áp án \u0111úng: D. \u1ed0ng dây và lõi s\u1eaft.<\/strong><\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"147","test":"0","date":"2022-10-27 09:52:49","option_type":"txt","len":3},{"id":"10015","post_id":"6352","mon_id":"1158739","chapter_id":"1158841","question":"<p>\u0110\u1ec3 xác \u0111\u1ecbnh c\u1ef1c B\u1eafc c\u1ee7a nam châm \u0111i\u1ec7n \u0111ang ho\u1ea1t \u0111\u1ed9ng, ta có th\u1ec3 dùng<\/p>","options":["A. m\u1ed9t thanh s\u1eaft.","B. m\u1ed9t thanh nam châm.","C. m\u1ed9t \u0111o\u1ea1n dây \u0111i\u1ec7n.","D. m\u1ed9t thanh nh\u1ef1a."],"correct":"2","level":"1","hint":"<p>Hai nam châm hút nhau khi khác c\u1ef1c, \u0111\u1ea9y nhau khi cùng c\u1ef1c.<\/p>","answer":"<p>\u0110\u1ec3 xác \u0111\u1ecbnh c\u1ef1c B\u1eafc c\u1ee7a nam châm \u0111i\u1ec7n \u0111ang ho\u1ea1t \u0111\u1ed9ng, ta có th\u1ec3 dùng m\u1ed9t thanh nam châm.<br \/><span style=\"color:#27ae60;\"><strong>\u0110áp án \u0111úng: B. m\u1ed9t thanh nam châm.<\/strong><\/span><br \/> <\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"147","test":"0","date":"2022-10-27 09:53:38","option_type":"txt","len":2}]}
