Question

To establish an instantaneous current of $2 A$ through a $1 \mu F$ capacitor; the potential difference across the capacitor plates should be changed at the rate of :

• A. $2 \times 10^4V/s$
• B. $4 \times 10^6V/s$
• C. $2 \times 10^6V/s$
• D. $4 \times 10^4V/s$

Answer 1

Answer: (C)

$2 \times 10^6V/s$

Answer 2

As, $C=\frac{Q}{V}=\frac{It}{V}$ $\Rightarrow \frac{V}{t}=\frac{I}{C}=\frac{2}{1\times10^{-6}}$ $=2\times10^{6}\,V/s$