Cảm ứng điện từ. Nguyên tắc tạo ra dòng điện xoay chiều (dễ)

Home Lớp 9 Khoa học tự nhiên 9 - sách kết nối tri thức Bài 14: Cảm ứng điện từ. Nguyên tắc tạo ra dòng điện xoay chiềuBài tập cơ bản

{"common":{"save":0,"post_id":"8258","level":1,"total":10,"point":10,"point_extra":0},"segment":[{"id":"9416","post_id":"8258","mon_id":"1159533","chapter_id":"1159664","question":"Hi\u1ec7n t\u01b0\u1ee3ng c\u1ea3m \u1ee9ng \u0111i\u1ec7n t\u1eeb x\u1ea3y ra khi:<\/p>","options":["A. M\u1ed9t dây d\u1eabn có dòng \u0111i\u1ec7n ch\u1ea1y qua.","B. M\u1ed9t t\u1eeb tr\u01b0\u1eddng bi\u1ebfn thiên xuyên qua m\u1ed9t vòng dây d\u1eabn kín.","C. M\u1ed9t dây d\u1eabn \u0111\u01b0\u1ee3c \u0111\u1eb7t trong t\u1eeb tr\u01b0\u1eddng \u0111\u1ec1u.","D. M\u1ed9t dây d\u1eabn \u0111\u01b0\u1ee3c n\u1ed1i v\u1edbi ngu\u1ed3n \u0111i\u1ec7n."],"correct":"2","level":"1","hint":"","answer":"\u0110áp án: B. M\u1ed9t t\u1eeb tr\u01b0\u1eddng bi\u1ebfn thiên xuyên qua m\u1ed9t vòng dây d\u1eabn kín. Gi\u1ea3i thích: Hi\u1ec7n t\u01b0\u1ee3ng c\u1ea3m \u1ee9ng \u0111i\u1ec7n t\u1eeb x\u1ea3y ra khi t\u1eeb tr\u01b0\u1eddng xuyên qua m\u1ed9t vòng dây d\u1eabn kín thay \u0111\u1ed5i, t\u1ea1o ra dòng \u0111i\u1ec7n c\u1ea3m \u1ee9ng trong m\u1ea1ch.  <\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"125","test":"0","date":"2024-12-29 08:07:31","option_type":"txt","len":3},{"id":"9417","post_id":"8258","mon_id":"1159533","chapter_id":"1159664","question":"Dòng \u0111i\u1ec7n c\u1ea3m \u1ee9ng là:<\/p>","options":["A. Dòng \u0111i\u1ec7n \u0111\u01b0\u1ee3c t\u1ea1o ra do l\u1ef1c ma sát gi\u1eefa hai v\u1eadt d\u1eabn.","B. Dòng \u0111i\u1ec7n xu\u1ea5t hi\u1ec7n trong m\u1ea1ch kín khi có hi\u1ec7n t\u01b0\u1ee3ng c\u1ea3m \u1ee9ng \u0111i\u1ec7n t\u1eeb.","C. Dòng \u0111i\u1ec7n sinh ra khi dây d\u1eabn \u0111\u01b0\u1ee3c n\u1ed1i v\u1edbi ngu\u1ed3n \u0111i\u1ec7n. \n ","D. Dòng \u0111i\u1ec7n sinh ra khi v\u1eadt d\u1eabn chuy\u1ec3n \u0111\u1ed9ng trong không khí."],"correct":"2","level":"1","hint":"","answer":"\u0110áp án: B. Dòng \u0111i\u1ec7n xu\u1ea5t hi\u1ec7n trong m\u1ea1ch kín khi có hi\u1ec7n t\u01b0\u1ee3ng c\u1ea3m \u1ee9ng \u0111i\u1ec7n t\u1eeb. Gi\u1ea3i thích: Khi có hi\u1ec7n t\u01b0\u1ee3ng c\u1ea3m \u1ee9ng \u0111i\u1ec7n t\u1eeb, dòng \u0111i\u1ec7n \u0111\u01b0\u1ee3c t\u1ea1o ra trong m\u1ea1ch kín g\u1ecdi là dòng \u0111i\u1ec7n c\u1ea3m \u1ee9ng.<\/p>  <\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"125","test":"0","date":"2024-12-29 08:08:55","option_type":"txt","len":3},{"id":"9418","post_id":"8258","mon_id":"1159533","chapter_id":"1159664","question":"Nguyên t\u1eafc t\u1ea1o ra dòng \u0111i\u1ec7n xoay chi\u1ec1u d\u1ef1a trên:<\/p>","options":["A. Dòng \u0111i\u1ec7n ch\u1ea1y qua dây d\u1eabn \u0111\u1eb7t trong t\u1eeb tr\u01b0\u1eddng \u0111\u1ec1u.","B. Dây d\u1eabn chuy\u1ec3n \u0111\u1ed9ng trong t\u1eeb tr\u01b0\u1eddng không \u0111\u1ed5i.","C. S\u1ef1 bi\u1ebfn \u0111\u1ed5i t\u1eeb tr\u01b0\u1eddng xuyên qua m\u1ed9t cu\u1ed9n dây kín.","D. Dòng \u0111i\u1ec7n \u0111i qua m\u1ed9t dây d\u1eabn hình xo\u1eafn \u1ed1c."],"correct":"3","level":"1","hint":"","answer":"\u0110áp án: C. S\u1ef1 bi\u1ebfn \u0111\u1ed5i t\u1eeb tr\u01b0\u1eddng xuyên qua m\u1ed9t cu\u1ed9n dây kín. Gi\u1ea3i thích: Dòng \u0111i\u1ec7n xoay chi\u1ec1u \u0111\u01b0\u1ee3c t\u1ea1o ra khi t\u1eeb tr\u01b0\u1eddng bi\u1ebfn \u0111\u1ed5i xuyên qua cu\u1ed9n dây kín, làm dòng \u0111i\u1ec7n trong m\u1ea1ch thay \u0111\u1ed5i theo th\u1eddi gian.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"125","test":"0","date":"2024-12-29 08:10:42","option_type":"txt","len":3}]}