(11电磁感应)4 感生电动势& 动生电动势(原卷)
【感生电动势】1、感生电动势定量计算1、如图所示,三个相同的金属圆环A、B、C内存在着不同的有界匀强磁场,虚线为圆环的直径.已知所有磁场的磁感应强度随时间的变化关系都满足,磁场方向如图中所示.现测得A环内的感应电流大小为I,则B环、C环内产生的感应电流的大小和分别为()A.I、0B.I、C.、D.、02、如图甲所示,螺线管匝数n=1500匝,横截面积S=20cm2,螺线管导线电阻r=2Ω,电阻R=4Ω,磁感应强度B的B-t图像如图乙所示(以向右为正方向),下列说法正确的是( )A.电阻R中的电流方向是从A到CB.感应电流的大小保持不变C.电阻R两端的电压为4VD.C点的电势为6V3、如图所示,...
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