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Figure shows a wire sliding on two paral...

Figure shows a wire sliding on two parallel, conducting rails placed at a separation `L` . A magnetic field `B` exists in a direction perpendicular to the plane of the rails. What force is necessary to keep the wire moving at a constant velocity `V` ?

A

evB

B

`(mu_(0)Bv)/(4pil)`

C

Blv

D

zero

Text Solution

Verified by Experts

The correct Answer is:
D
No change in flux, hence no force required.
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