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

The magnetic flux linked with a coil, in webers is given by the equation `phi=3t^(2)+4t+9`. Then, the magnitude of induced emf at t = 2 s

A

2 V

B

4 V

C

8V

D

16 V

Text Solution

Verified by Experts

The correct Answer is:
D
(4)
`e=(dphi)/(dt)=d/(dt)(3t^2+4t+9)=-(6t+4)`
`=-[6xx(2)xx4]=-6`
:.|e|=16V`
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