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Two long parallel conducting horizontal ...

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 force required to pull the ring with uniform velocity v is

Text Solution

Verified by Experts

The correct Answer is:
`[(4B^(2)vd)/(pi lamda)]`
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