Electro Magnetic Induction And Alternating Currents Question 388

Question: Magnetic flux f (in weber) linked with a closed circuit of resistance 10 ohm varies with time t (in seconds) as φ=5t24t+1 The induced electromotive force in the circuit at t = 0.2 sec. is [MP PMT 2001]

Options:

A) 0.4 volts

B) ? 0.4 volts

C) ? 2.0 volts

D) 2.0 volts

Show Answer

Answer:

Correct Answer: D

Solution:

e=dφdt=(10t4)

Þ (e)t=2=(10×0.24)=2 volt



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