Electro Magnetic Induction And Alternating Currents Question 531

Question: In a transformer, the coefficient of mutual inductance between the primary and the secondary coil is 0.2 henry. When the current changes by 5 ampere/second in the primary, the induced e.m.f. in the secondary will be [MP PMT 1989]

Options:

A) 5 V

B) 1 V

C) 25 V

D) 10 V

Show Answer

Answer:

Correct Answer: B

Solution:

$ e=M\frac{di}{dt}=0.2\times 5=1\ V $



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