A square coil of side 0.5 m has movable ...

A square coil of side `0.5 m` has movable sides. It si placed such that its plance is perpendiuclar to uniform magnetic field of induction `0.2T`. If all the sides are allowed to move with a speed of `0.1 m//s` for `4` sec outwards, average induced `emf` is

Zero

`0.01V`

`0.028 V`

`0.072 V`

Text Solution

Verified by Experts

The correct Answer is:

`e = B((dA)/(dt))`

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