Electro Magnetic Induction And Alternating Currents Question 8

Question: An inductive circuit contains resistance of 10 W and an inductance of 20 H. If an ac voltage of 120 V and frequency 60 Hz is applied to this circuit, the current would be nearly

Options:

A) 0.32 amp

B) 0.016 amp

C) 0.48 amp

D) 0.80 amp

Show Answer

Answer:

Correct Answer: B

Solution:

$ i=\frac{V}{\sqrt{R^{2}+{{\omega }^{2}}L^{2}}}=\frac{120}{\sqrt{100+4{{\pi }^{2}}\times 60^{2}\times 20^{2}}} $ =0.016 A



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