Electro Magnetic Induction And Alternating Currents Question 20

Question: An inductive circuit contains a resistance of 10 ohm and an inductance of 2.0 henry. If an ac voltage of 120 volt and frequency of 60 Hz is applied to this circuit, the current in the circuit would be nearly [CPMT 1990; MP PET 2002]

Options:

A) 0.32 amp

B) 0.16 amp

C) 048 amp

D) 0.80 amp

Show Answer

Answer:

Correct Answer: B

Solution:

$ Z=\sqrt{R^{2}+X_{L}^{2}} $ $ =\sqrt{10^{2}+{{(2\pi \times 60\times 2)}^{2}}}=753.7 $
$ \therefore i=\frac{120}{753.7}=0.159A $



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