A capacitor is a perfect insulator for | PHYSICS - AC VOLTAGE APPLIED TO A CAPACITOR | SolveeIt | Solveeit

Today, August 18

Question

A capacitor is a perfect insulator for

A

Alternating currents

B

Direct currents

C

Both ac and dc

D

None of these

Answer

Direct currents

Explanation

Solution

$X _ { C } = \frac { 1 } { \omega C } = \frac { 1 } { 2 \pi \nu C }$ ; For dc $v = 0 , \quad \therefore X _ { C } = \infty$