Electro Magnetic Induction And Alternating Currents Question 577

Question: An e.m.f. of 12 volt is produced in a coil when the current in it changes at the rate of 45 amp/minute. The inductance of the coil is [MP PET 2000]

Options:

A) 0.25 henry

B) 1.5 henry

C) 9.6 henry

D) 16.0 henry

Show Answer

Answer:

Correct Answer: D

Solution:

$ e=L\frac{di}{dt}\Rightarrow 12=L\times \frac{45}{60}\Rightarrow L=16H $



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