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A uniform but time varying magnetic fiel...

A uniform but time varying magnetic field is present in a circular region of radius R. The magnetic field is perpendicular and into the plane of the loop and the magnitude of field is increasing at a constant rate `alpha`. There is a straight conducting rod of length 2R placed as shown in figure.

The magnitude of induced emf across the rod is

A

`piR^2alpha`

B

`(piR^2alpha)/4`

C

`(R^2alpha)/(sqrt(2))`

D

`(piR^2alpha)/2`

Text Solution

Verified by Experts

The correct Answer is:
B
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