If a current of `3.0` amperes flowing in the primary coil is reduced to zero in `0.001` second, then
Channel: Doubtnut
Date: 2020-01-19

If a current of `3.0` amperes flowing in the primary coil is reduced to zero in `0.001` second, then the induced e.m.f. in the secondary coil is `15000 \"volts\"`. The mutual inductance between the two coils is