Electro Magnetic Induction And Alternating Currents Question 10
Question: A capacitor is a perfect insulator for
Options:
A) Alternating currents
B) Direct currents
C) Both ac and dc
D) None of these
Show Answer
Answer:
Correct Answer: B
Solution:
$ X_{C}=\frac{1}{\omega C}=\frac{1}{2\pi \nu ,C} $ ; For dc $ \nu =0,,\therefore X_{C}=\infty $
