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A coil having an area A(0) is placed in ...

A coil having an area `A_(0)` is placed in a magnetic field which changes from `B_(0)` to `4B_(0)` in time interval t. The emf induced in the coil will be

A

`(3A_0B_0)/t`

B

`(4A_0B_0)/(t)`

C

`(3B_0)/(A_0t)`

D

`(B_0A_0)/(t)`

Text Solution

Verified by Experts

The correct Answer is:
A
According to the relation :
`e = (phi_2 - phi_1)/(t) = ((4B_0 - B_0))/(t) A_0`
`e = (3 B_0A_0)/(t)`
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