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Two long parallel conducting horizontal rails are connected by a conducting wire at one end. A uniform magnetic field B (directed vertically downwards) exists in the region of space.

A light uniform ring of diameter d which is practically equal to separation between the rails is placed over the rails as shown in Fig. If resistance of ring be `(lambda)` per unit length
The current in the wire MN is

A

`(2Bv)/(3 pi lambda)` from M to N

B

`(Bv)/(3 pi lambda)` from M to N

C

`(2Bv)/(3 pi lambda)` from N to M

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
D
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