A) 0
B) \[\frac{2Brv}{R}\]
C) \[\frac{4Brv}{R}\]
D) \[\frac{8Brv}{R}\]
Correct Answer: D
Solution :
When a ring moves in a magnetic field perpendicular to its plane, replace the ring by a diameter perpendicular to the direction of motion. The emf is induced across this diameter. Induced emf \[e=B(2r)v\] Resistance of each half of ring\[=R/2\] As these are in parallel, the equivalent resistance = R/4 Current in the circuit\[=\frac{B(2r)v}{R/4}=\frac{8Brv}{R}\] Hence, the correction option is [d].You need to login to perform this action.
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