A 12,pF capacitor is connected to a 50,V battery. How much electrostatic energy is stored in capacit

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2. Electric Potential and Capacitance

easy

A $12\,pF$ capacitor is connected to a $50\,V$ battery. How much electrostatic energy is stored in the capacitor

A

$1.5 \times {10^{ - 8}}\,J$

B

$2.5 \times {10^{ - 7}}\,J$

C

$3.5 \times {10^{ - 5}}\,J$

D

$4.5 \times {10^{ - 2}}\,J$

Solution

(a) $U = \frac{1}{2}C{V^2} = \frac{1}{2} \times 12 \times {10^{ – 12}} \times {(50)^2}$$ = 1.5 \times {10^{ – 8}}\,J$

Standard 12

Physics

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