矩形线圈在匀强磁场中匀速转动，所产生的交变电流的波形如图所示，下列说法中正确的是( )

题干

A：在t₂时刻穿过线圈的磁通量达到最大值

B：在t₁时刻穿过线圈的磁通量达到最大值

C：在t₃时刻线圈处在中性面位置

D：在t₄时刻穿过线圈的磁通量的变化率达到峰值

上一题下一题 0.0难度选择题更新时间:2019-09-19 10:01:22

答案(点此获取答案解析）

A

同类题4

Welcome to the City Zoo! There are many1in the zoo. Let’s see the koalas first. Koalas are2Australia. They are quiet,3and cute. Children like them very much. The kangaroos (袋鼠) are also from4. They are quiet and interesting,5they are not friendly.
The giraffes come from Africa. They have a6neck (脖子). They like to eat leaves. The lions are also from Africa. They are exciting, but a little7. Many people don’t like8. We also have pandas. They are from China. They are very cute and friendly, but they are very shy. So please be9.
Have10and enjoy yourself here!

题干

答案(点此获取答案解析）

同类题1

同类题2

同类题3

同类题4

同类题5