(B) The energy stored in a capacitor is given by $U = \frac{1}{2}CV^2$.Given: $C = 40\ \mu F = 40 \times 10^{-6}\ F$,$V = 3000\ V$,and $t = 2\ ms = 2

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(B) The energy stored in a capacitor is given by $U = \frac{1}{2}CV^2$.Given: $C = 40\ \mu F = 40 \times 10^{-6}\ F$,$V = 3000\ V$,and $t = 2\ ms = 2 \times 10^{-3}\ s$.Substituting the values:$U = \frac{1}{2} \times (40 \times 10^{-6}) \times (3000)^2 = 20 \times 10^{-6} \times 9 \times 10^6 = 180\ J$.The power delivered is $P = \frac{U}{t} = \frac{180\ J}{2 \times 10^{-3}\ s} = 90 \times 10^3\ W = 90\ kW$.

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

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In a defibrillator,a $40\ \mu F$ capacitor is charged to $3000\ V$. If the stored energy of the capacitor is discharged through the patient during a pulse of duration $2\ ms$,what is the power delivered to the patient in $kW$?

A
$45$
B
$90$
C
$180$
D
$360$

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Electric Potential and Capacitance

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Energy Stored in a Capacitor

If a capacitor of capacity $900 \mu F$ is charged to $100 \ V$ and its total energy is transferred to a capacitor of capacity $100 \mu F$, then its potential will be (in $V$)

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Energy is stored in what form in a capacitor?

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$A$ piece of cloud having an area of $25 \times 10^6 \, m^2$ and an electric potential of $10^5 \, V$. If the height of the cloud is $0.75 \, km$,then the energy of the electric field between the earth and the cloud will be.....$J$

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Four capacitors each of capacity $2 \mu F$ are connected as shown in the figure. If $V_{A}-V_{B}=10 \,V$,the energy stored in the system is:

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The $V-Q$ graph is shown below. What does the area of $\triangle OAB$ represent in this graph?

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In a defibrillator,a $40\ \mu F$ capacitor is charged to $3000\ V$. If the stored energy of the capacitor is discharged through the patient during a pulse of duration $2\ ms$,what is the power delivered to the patient in $kW$?

Similar Questions

If a capacitor of capacity $900 \mu F$ is charged to $100 \ V$ and its total energy is transferred to a capacitor of capacity $100 \mu F$, then its potential will be (in $V$)

Energy is stored in what form in a capacitor?

$A$ piece of cloud having an area of $25 \times 10^6 \, m^2$ and an electric potential of $10^5 \, V$. If the height of the cloud is $0.75 \, km$,then the energy of the electric field between the earth and the cloud will be.....$J$

Four capacitors each of capacity $2 \mu F$ are connected as shown in the figure. If $V_{A}-V_{B}=10 \,V$,the energy stored in the system is:

The $V-Q$ graph is shown below. What does the area of $\triangle OAB$ represent in this graph?

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