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A conducting rod AB moves parallel to x-...

A conducting rod AB moves parallel to x-axis in a uniform magnetic field pointing perpendicular and into the plane of paper. The end A of the rod

A

gets positively charged

B

gets negatively charged

C

remains neutral

D

gets positively charged first and then negatively charged

Text Solution

Verified by Experts

When rod moves, its free electrons constitute a current along the negative y-axis. According to Fleming.s left hand rule, the force on electrons is along the length towards B, so electrons migrate from A to B, and hence end A becomes positively charged.
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