First slide

Capacitance

Question

A 2 $μ$ F capacitor is charged to 100 V, and then its plates are connected by a conducting wire. The heat produced is

Easy

A

0.001 J
B

0.01 J
C

0.1 J
D

1 J

Solution

The whole amount of energy stored in capacitor will convert into heat.
Heat = $\frac{1}{2} C V^{2} = \frac{1}{2} \times 2 \times 10^{- 6} \times {(100)}^{2} = 0.01 J$

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