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Two coils P and Q are kept near each ...

Two coils P and Q are kept near each other. When no current flows through coil P and current increases in coil Q at the rate `10 A//s`, the emf in coil P is 15 mV. When coil Q carries no current and current of `1.8 A` flows through coil P, the magnetic flux linked with the coil Q is

A

1.4mWb

B

2.2mWb

C

2.7 mWb

D

2.9mWb

Text Solution

Verified by Experts

The correct Answer is:
C
`|e_(p)|=M. (dI_(Q))/(dt)`
`15 xx 10^(-3)=M xx 10^(-4)H`
`phi_(Q)=MI_(p)`
`=15 xx 10^(-4) xx 1.8`
`=2.7 xx 10^(-3)`
`=2.7 mWb` .
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