Electro Magnetic Induction And Alternating Currents Question 568

Question: The current in a coil changes from 4 ampere to zero in 0.1 s. If the average e.m.f. induced is 100 volt, what is the self inductance of the coil [MNR 1998]

Options:

A) 2.5 H

B) 25,H

C) 400 H

D) 40 H

Show Answer

Answer:

Correct Answer: A

Solution:

e=Ldidt100=L×40.1L=2.5 H



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