एक कुंडली का स्व-प्रेरित विद्युत वाहक बल (self-induced emf) 26 V होता है जब इसमें धारा 5 s में समान दर से 10 A से बदलकर 75 A हो जाती है। प्रेरक (inductor) में संचित चुंबकीय ऊर्जा में कितना परिवर्तन होगा?

A rectangular wire loop of sides 8 cm and 3 cm with a small cut is moving out of a region of uniform magnetic field of magnitude 0.3 T directed normal to the plane of the loop. The emf developed across the cut, if the velocity of the loop is 2 cm s-1 in a direction normal to the shorter side of the loop, will be:

The mutual inductance between two coils is 2 H. If the current in one coil changes from 0 to 10 A in 0.5 s, find the magnitude of the induced EMF in the second coil.