(B) The energy stored in a fully charged capacitor is given by $U = \frac{1}{2}CV^2$.When the capacitor discharges through the coil,this electrical en

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

(B) The energy stored in a fully charged capacitor is given by $U = \frac{1}{2}CV^2$.When the capacitor discharges through the coil,this electrical energy is converted into heat energy.The heat energy absorbed by the block is given by $Q = ms\Delta T$.By the principle of conservation of energy,the electrical energy stored in the capacitor equals the heat energy gained by the block:$\frac{1}{2}CV^2 = ms\Delta T$Solving for $V$:$V^2 = \frac{2ms\Delta T}{C}$$V = \sqrt{\frac{2ms\Delta T}{C}}$Therefore,the correct option is $B$.

Class 12 Physics Electrostatic Potential and Capacitance Mix Examples - Electric Potential and Capacitance

Medium

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

AIEEE 2005 All AIEEE

A
$\frac{ms\Delta T}{C}$
B
$\sqrt{\frac{2ms\Delta T}{C}}$
C
$\sqrt{\frac{2mC\Delta T}{s}}$
D
$\frac{mC\Delta T}{s}$

Explore More

Browse All

Question Bank

All Subjects

Class 12 Questions

Class 12

Physics Questions

Chapter

Electrostatic Potential and Capacitance

Subtopic

Mix Examples - Electric Potential and Capacitance

Previous Year

AIEEE 2005 Paper All AIEEE years →

Two thin dielectric slabs of dielectric constants $K_1$ and $K_2$ $(K_1 < K_2)$ are inserted between the plates of a parallel plate capacitor,as shown in the figure. The variation of the electric field $E$ between the plates with distance $d$ as measured from plate $P$ is correctly shown by:

MediumAIPMT 2014

View Solution

Two capacitors of capacitances $1 \ \mu F$ and $2 \ \mu F$ are charged to potential differences $20 \ V$ and $15 \ V$ as shown in the figure. If terminals $B$ and $C$ are connected together and terminals $A$ and $D$ are connected together,then find the final charge on the $1 \ \mu F$ capacitor.

Medium

View Solution

Consider two charged metallic spheres $S_{1}$ and $S_{2}$ of radii $R_{1}$ and $R_{2},$ respectively. The electric fields $E_{1}$ (on $S_{1}$) and $E_{2}$ (on $S_{2}$) on their surfaces are such that $E_{1} / E_{2} = R_{1} / R_{2}.$ Then the ratio $V_{1} / V_{2}$ of the electrostatic potentials on each sphere is:

MediumJEE MAIN 2020

View Solution

If an electron enters into a space between the plates of a parallel plate capacitor at an angle $\alpha$ with the plates and leaves at an angle $\beta$ to the plates,the ratio of its kinetic energy while entering the capacitor to that while leaving will be

Medium

View Solution

In the circuit shown in the following figure,the potential difference across the $3 \mu F$ capacitor is: (in $V$)

EasyMHT CET 2024

View Solution

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial

For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free

For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo

Similar Questions

Two thin dielectric slabs of dielectric constants $K_1$ and $K_2$ $(K_1 < K_2)$ are inserted between the plates of a parallel plate capacitor,as shown in the figure. The variation of the electric field $E$ between the plates with distance $d$ as measured from plate $P$ is correctly shown by:

Two capacitors of capacitances $1 \ \mu F$ and $2 \ \mu F$ are charged to potential differences $20 \ V$ and $15 \ V$ as shown in the figure. If terminals $B$ and $C$ are connected together and terminals $A$ and $D$ are connected together,then find the final charge on the $1 \ \mu F$ capacitor.

If an electron enters into a space between the plates of a parallel plate capacitor at an angle $\alpha$ with the plates and leaves at an angle $\beta$ to the plates,the ratio of its kinetic energy while entering the capacitor to that while leaving will be

In the circuit shown in the following figure,the potential difference across the $3 \mu F$ capacitor is: (in $V$)

Vedclass Test Series

Exam Paper Generator

Online Exam Module