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A conducting ring of radius 'r' is rolli...

A conducting ring of radius `'r'` is rolling without slipping with a constant angular velocity `omega` (figure). If the magnetic field strengh is `B` and is directed into the page the emf induced across `PQ` is

A

(a) `Bomegar^(2)`

B

(b) `Bomegar^2/(2)`

C

( c) `4Bomegar^(2)`

D

(d) `pi^(2)r^(2)Bomega/(8)`

Text Solution

Verified by Experts

The correct Answer is:
A
(a) `|vec(E)|`= Magnitude of I nduced `emf`
`= (Bl^(2))/(2)omega`, `l = dsqrt(2)r` (i)
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