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A conducting rod of length l and mass m is moving down a smooth inclined plane of inclination `theta` with constant i is flowing in the conductor in a direction perpendicular to paper inwards. A vertically upward magnetic field `vec B` exists in space. Then, magnitude of magnetic field `vec B` is

A

`((mg)/(iL cos theta))`

B

`((mg)/(iL tan theta))`

C

`((mg tan theta)/(iL))`

D

`((mg)/(iL sin theta))`

Text Solution

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The correct Answer is:
C
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