Question

How many $1\,\mu F$ capacitors must be connected in parallel to store a charge of $1\, C$ with a potential of $110\, V$ across the capacitors?

• A. 990
• B. 900
• C. 9090
• D. 909

Answer 1

Answer: (C)

9090

Answer 2

charge $q=n C V$
$1=n \times 1 \times 10^{-6} \times 110$
$n =\frac{1}{110 \times 10^{-6}}$
$n=\frac{100000}{11}$
$\approx 9090$