Electro Magnetic Induction And Alternating Currents Question 540

Question: Two circuits have coefficient of mutual induction of 0.09 henry. Average e.m.f. induced in the secondary by a change of current from 0 to 20 ampere in 0.006 second in the primary will be [MP PET 1992]

Options:

A) 120 V

B) 80 V

C) 200 V

D) 300 V

Show Answer

Answer:

Correct Answer: D

Solution:

$ e=M\frac{di}{dt}=0.09\times \frac{20}{0.006}=300\ V $



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