Electro Magnetic Induction And Alternating Currents Question 533

Question: The mutual inductance between two coils is 1.25 henry. If the current in the primary changes at the rate of 80 ampere/second, then the induced e.m.f. in the secondary is [MP PET 1990]

Options:

A) 12.5 V

B) 64.0 V

C) 0.016 V

D) 100.0 V

Show Answer

Answer:

Correct Answer: D

Solution:

$ e=M\frac{di}{dt}=1.25\times 80=100\ V $



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