Two coils are at fixed location: When coil 1 has no corrent and the current in coil 2 increase at the rate of `15.0 A s^(-1)`, the emf in coil 1 is `25 mV`, when coil 2 has no current and coil 1 has a current of `3.6 A`, the flux linkange in coil 2 is

Options

A. `16 m Wb`
B. `10 m Wb`
C. `4.00 m Wb`
D. `6.00 m Wb`

Answer

D

Explanation

Coefficient of mutual inductance `M` is given by
`|M| = (e_(1))/((di_(2)//dt)) = (phi_(2))/(i_(1))`
`:. phi_(2) = (e_(1)i_(1))/((di_(2)//dt)) = ((25.0 xx 10^(-3))(3.6))/((15))`