Electro Magnetic Induction And Alternating Currents Question 590

Question: Two circuits have mutual inductance of 0.1 H. What average e.m.f. is induced in one circuit when the current in the other circuit changes from 0 to 20 A in 0.02 s [Kerala PET 2002]

Options:

A) 240 V

B) 230 V

C) 100 V

D) 300 V

Show Answer

Answer:

Correct Answer: C

Solution:

$ e=M\frac{di}{dt}\Rightarrow e=0.1\times \frac{(20-0)}{0.02}=100V $



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