What is the energy stored in a capacitor if capacitance is 4 μF and voltage is 100 V?

0.04 J

0.02 J

0.2 J

0.01 J

To find the energy stored in a capacitor, we use the formula:

$E = 1/2 C V^^{2}$

Where:

$E = frac{1}{2} times 4 times 10^{-6} times (100)^2$ $E = 1/2 \times 4 \times 1 0^^{- 6} \times 10000$ $E = 2 \times 1 0^^{- 6} \times 10000$

$= 0.02 J$