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A vertical conducting ring ogradius R fa...

A vertical conducting ring ogradius `R` falls vertically in a horizontal magnetic field of magnitude `B`. The direction of `B` is perpendicular to the plane of the ring. When the speed of the ring is `v,

A

(a) no current flows in the ring

B

(b) `A and D` are at the same potential

C

( c) `C and E` are at the same potential

D

(d) the potential difference between `A and D` is `2BRv`, with `D` at a higher potetial

Text Solution

Verified by Experts

The correct Answer is:
A, C, D
(a,c,d):
No emf is icuced because flux through the ring does not change. Hence no current flows in the ring. Emf is induced between `A and D` because length `AD` is perpendicular to `v`. But no emf is induced across `CE` because length `CE` is parallel to `v`.
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