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 $



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