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A coil having area A​(0) is placed in a ...

A coil having area `A​_(0)` is placed in a magnetic field which changes from `B_(​0)` to `4B_(​0)` in 't' seconds, as shown in the figure. The induced emf will be :-

A

`( 3 A_(0) B_(0))/(t) `

B

`4 A_(0)B_(0)t`

C

zero

D

none

Text Solution

Verified by Experts

The correct Answer is:
C
`varphi = BA cos theta `
`pi = 90^(@) ( vecB and BvecA " are " bot )`
`varphi =0 `
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