(i) Define mutual inductance.
(ii) A pair of adjacent coils has a mutual inductance of 1.5 H. If the current in one coil changes from 0 to 20 A in 0.5 *, what is the change of flux linkage with the other coil ?
(i) Magnetic flux, linked with the secondary coil due to the unit current flowing in the primary coil,
ϕ2 = MI1
Alternatively
Induced emf associated with the secondary coil, for a unit rate of change of current in the primary coil.
