(D) The energy $U$ stored in a capacitor is given by the formula $U = \frac{1}{2}CV^2$.Given:Capacitance $C = 700\,pF = 700 \times 10^{-12}\,F = 7 \ti

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(D) The energy $U$ stored in a capacitor is given by the formula $U = \frac{1}{2}CV^2$.Given:Capacitance $C = 700\,pF = 700 \times 10^{-12}\,F = 7 \times 10^{-10}\,F$.Potential difference $V = 50\,V$.Substituting the values:$U = \frac{1}{2} \times (700 \times 10^{-12}) \times (50)^2$$U = \frac{1}{2} \times 700 \times 10^{-12} \times 2500$$U = 350 \times 2500 \times 10^{-12}$$U = 875000 \times 10^{-12}\,J$$U = 8.75 \times 10^{-7}\,J$.

Class 12 Physics Electric Potential and Capacitance Energy Stored in a Capacitor

Easy

$A$ $700\,pF$ capacitor is charged by a $50\,V$ battery. The electrostatic energy stored by it is

A
$17.0 \times 10^{-8}\,J$
B
$13.6 \times 10^{-9}\,J$
C
$9.5 \times 10^{-9}\,J$
D
$8.75 \times 10^{-7}\,J$

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Electric Potential and Capacitance

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Energy Stored in a Capacitor

The charge $q$ on a capacitor varies with voltage $V$ as shown in the graph. The area of $\Delta OPM$ represents:

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$A$ fully charged capacitor has a capacitance $C$. It is discharged through a small coil of resistance wire,embedded in a block of specific heat $s$ and mass $m$ under thermally isolated conditions. If the temperature of the block is raised by $\Delta T$,the potential difference $V$ across the capacitor initially is

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The energy of a charged capacitor is given by the expression ($q$ = charge on the conductor and $C$ = its capacity).

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The energy of a charged capacitor resides in

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$A$ variable condenser is permanently connected to a $100 \ V$ battery. If the capacity is changed from $2 \ \mu F$ to $10 \ \mu F$,then the change in energy is equal to:

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$A$ $700\,pF$ capacitor is charged by a $50\,V$ battery. The electrostatic energy stored by it is

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The charge $q$ on a capacitor varies with voltage $V$ as shown in the graph. The area of $\Delta OPM$ represents:

The energy of a charged capacitor is given by the expression ($q$ = charge on the conductor and $C$ = its capacity).

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