Question

Emf induced in a coil rotating in a uniform magnetic field will be maximum when the

• A. flux linking with the coil is maximum.
• B. rate of change of flux linkage is minimum.
• C. rate of change of flux linkage is maximum.
• D. rate of cutting flux by coil sides is minimum.

Answer 1

The correct option is C rate of change of flux linkage is maximum.

The rate of change of flux linkage is directly proportional to the induced EMF in a coil. Hence, the EMF is maximum when the rate of change of flux linkage is maximum.