A straight wire of length L is bent into...

A straight wire of length `L` is bent into a semicircle. It is moved in a uniform magnetic field with speed `v` with diameter perpendicular to the field. The induced emf between the ends of the wire is

BLv

2 BLv

`2 pi BLv`

`(2 BvL)/pi`

Text Solution

Verified by Experts

The correct Answer is:

Induced emf
`e = Bvl implies e = Bv (2 R) = (2BvL)/pi`

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