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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

`BvL`

B

`Bv^(2)L`

C

zero

D

`B^(2)v^(2)L//R`

Text Solution

Verified by Experts

The correct Answer is:
C
Since no current, `F=Bil=0`
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