A condenser having a capacity 2.0 micro farad is charged to 200volts and then plates of capacitor ar

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2. Electric Potential and Capacitance

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A condenser having a capacity $2.0$ micro farad is charged to $200\;volts$ and then the plates of the capacitor are connected to a resistance wire. The heat produced in joules will be

A

$4 \times {10^4}\,J$

B

$4 \times {10^{10}}\,J$

C

$4 \times {10^{ - 2}}\,J$

D

$2 \times {10^{ - 2}}\,J$

Solution

(c) $U = \frac{1}{2}C{V^2} = \frac{1}{2} \times 2 \times {10^{ – 6}} \times {(200)^2} = 4 \times {10^{ – 2}}\,J$

Standard 12

Physics

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