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Two coils are at fixed locations. When c...

Two coils are at fixed locations. When coil 1 has no current and the current in coil 2 increases at the rate of 15.0A/s the emf in coil 1 in 25.0mV, when coil has no current and coil 1 has acurrent of 3.6A, the flux linkage in coil 2 is

A

`16 mWb`

B

`10 mWb`

C

`4.00 mWb`

D

`6.00 mWb`

Text Solution

Verified by Experts

The correct Answer is:
D
`EMF=|-M(dI)/(dt)|25xx10^(-3)=Mxx15` or `M=5/3xx10^(-3)H`
`phi=MI=5/3xx10^(-3)xx3.6=6.00 mWb`.
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