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The flux (in weber) in a closed circuit ...

The flux (in weber) in a closed circuit of a resistance `10Omega` varies with time t (in seconds) according to equation `phi=12t^(2)-5t+1`. What is the magnitude of induced current at t=0.25 s?

A

`2A`

B

0.1 A

C

20 A

D

0.02 A

Text Solution

Verified by Experts

The correct Answer is:
B
`e=(dphi)/(dt)=24t-5=24xx0.25-5=1V`
Now, `I=(e)/(R)=(1)/(10)=0.1A`
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