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A magnetic field of 2xx10^(-2)T acts at ...

A magnetic field of `2xx10^(-2)T` acts at right angles to a coil of area `100cm^(2)` with `50` turns. The average emf induced in the coil is `0.1V`, when it is removed from the field in time `t`. The value of `t` is

A

`0.1sec`

B

`0.01sec`

C

`1sec`

D

`20sec`

Text Solution

Verified by Experts

The correct Answer is:
A
`|bar(e)|=(NBA)/(t)`
`0.1=(50xx2xx10^(-2)xx100xx10^(-4))/(t)`
`t=0.1s`
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