The magnetic flux linked with a coil, in...

The magnetic flux linked with a coil, in weber, is given by the equation `f=3T^(2)+4t+9`. Then the magnitude of induced e.m.f. at `t=2` second will be

A

`2` volt

B

`4` votl

C

`8` volt

D

`16` volt

Text Solution

Verified by Experts

The correct Answer is:

D

`e=-(dvarphi)/(dt)=-(d)/(dt)3(t^(2)+4t+9)=-(6t+4)`
`=-[6(2)+4]=-16implies|e|=16` volt

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