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
