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 mWb
B. 10 mWb
C. 4.00 mWb
D. 6.00 mWb

Answer

D

Explanation

Coefficient of mutual inductance M is given by
`|M|=e_1/((di_2//dt))=phi_2/i_1`
`:.phi_1=(e_1i_1)/((di_2//dt))=((25.0xx10^-3)(3.6))/((15))`