Question

The capacity of parallel plate air capacitor is 1$\mu F$ and voltage between the plates is changing at the rate of 3 V/s the current in the capacitor is :

• A. 2$\mu A$
• B. 3$\mu A$
• C. 5$\mu A$
• D. 6$\mu A$

Answer 1

The correct option is B 3$\mu A$

Given that,

Capacitor $C=1\mu F$

Changing at the rate $=3v/s$

We know that,

$Q=CV...\left(I\right)$

$Q=It....\left(I\right)$

Equating both equations

$It=CV$

$I=\frac{CV}{t}$

$I=1\times {10}^{-6}\times 3$

$I=3\times {10}^{-6}A$

$I=3\mu A$

Hence, this is the required solution