Question

A capacitor of 20uf is charged to a potential of 2000V. calculate the energy stored

Answer 1

Answer:

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Answer 2

Answer:

A capacitor of 20uf is charged to a potential of 2000V. The energy stored will be  $40\ J$

Explanation:

• Electric potential energy (E) stored in the capacitor  can be expressed as,

            $E=\frac{1}{2} C V^{2}$    ...(1)

• Where C is the capacitance and V is the potential difference between the capacitor plates.

In the question, it is given that,

$V= 2000\ V$

$C =20\ \mu F = 20\times10^{-6} F$

Substitute these  values into equation (1)

$E=\frac{1}{2}\times 20\times10^{-6} \times 2000^{2} = 40 \ J$

Thus,

The energy stored in the capacitor   will be $40\ J$