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Two identical conducting rings A and B o...

Two identical conducting rings `A` and `B` of radius `R` are rolling over a horizontal conducting plane with same speed `v` but in opposite direction. A constant magnetic field `B` is present pointing into the plane of paper. Then the potential difference between the highest points of the two rings is

A

zero

B

`2 Bvr`

C

`4 Bvr`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
C
Alternate-Considering rotation of diameter about lowest point: `e=(Bomega(2r)^(2))/2=2Bvr` at `A` with respect to plane (since pure rotation ). and `e=-2Bvr`at `B` with respect to plane So, potential difference between these two points=`4Bvr`
Hence `(c )`
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RESONANCE-ELECTROMAGNETIC INDUCTION-Exercis-1 PART 2
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