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The figure shows a conducting ring of ra...

The figure shows a conducting ring of radius `R`. A uniform steady magnetic field `B` lies perpendicular to the plane of the ring a circular region `r (lt R)`. If the resistance per unit length of the ring is `lamda`, then the current induced in the ring when its radius gets doubled is

A

`(BR)/lamda`

B

`(2BR)/lamda`

C

zero

D

`(Br^2)/(4Rlamda)`

Text Solution

Verified by Experts

The correct Answer is:
C
Even if radius is doubled, flux is not going to change.
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DC PANDEY ENGLISH-ELECTROMAGNETIC INDUCTION-Level 1 Objective
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