Question

A solenoid has 2000 turns wound over a length of
0.3 m. The area of cross-section is 1.2 x 10^-3 m^2.
Around its central section a coil of 300 turns is closely
wound. If an initial current of 2 A is reversed in 0.25 s,
find the emf induced in the coil.
Ans. 48 mV.​

Answer 1

Explanation:

Ans:48mV is correct..

Answer 2

A solenoid of 2000 turns is wound over a length of 0.3 m. The area aof cross section is

. Around its central seciton, a coil of 300 turns is closely wound. If an initial current of 2 A is reversed in 0.25 s, find the e.m.f induced in the coil .