Electro Magnetic Induction And Alternating Currents Question 551

Question: The inductance of a coil is 60,μH . A current in this coil increases from 1.0 A to 1.5 A in 0.1 second. The magnitude of the induced e.m.f. is [MP PMT 1995]

Options:

A) 60×10−6,V

B) 300×10−4,V

C) 30×10−4,V

D) 3×10−4,V

Show Answer

Answer:

Correct Answer: D

Solution:

e=Ldidt=60×10−6.(1.5−1.0)0.1=3×10−4volt

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