摘要:A.匀速滑动时.I1=0.I2=0B.匀速滑动时.I1≠0.I2≠0C.加速滑动时.I1=0.I2=0D.加速滑动时.I1≠0.I2≠0
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在图中,EF、GH为平行的金属导轨,其电阻不计,R为电阻,C为电容器,AB为可在EF和GH上滑动的导体横杆.有匀强磁场垂直于导轨平面.若用I1和I2分别表示图中该处导线中的电流,则当横杆AB( )
A.匀速滑动时,I1=0,I2=0 | B.匀速滑动时,I1≠0,I2≠0 |
C.加速滑动时,I1=0,I2=0 | D.加速滑动时,I1≠0,I2≠0 |