A parallel plate capacitor is charged fully by using a battery. T… - Vidyadip

MCQ

A parallel plate capacitor is charged fully by using a battery. Then, without disconnecting the battery, the plates are moved further apart. Then,

A
the charge on the capacitor increases
B
the voltage difference between the plates decreases
C
the capacitance increases
✓
the electrostatic energy stored in the capacitor decreases

✓

Answer

Correct option: D.

the electrostatic energy stored in the capacitor decreases

d
(d)

As plates are moved far away further, capacity of capacitor $\left(C=\frac{\varepsilon_0 A}{d}\right)$ decreases.

As battery remains connected during this activity, potential difference between plates remains same.

So, the charge on plates $(Q=C V)$ decreases.

Also, energy of capacitor $\left(U=\frac{1}{2} C V^2\right)$ decreases as capacitance decreases. So, correct option is $( d )$.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from 2. Electric potential and capacitance→2. Electric potential and capacitance — all question types→Physics STD 12 Science question papers→CBSE Board STD 12 Science question papers→CBSE Board question paper generator→

Similar questions

In Bainbridge mass spectrograph a potential difference of $1000 V$ is applied between two plates distant $1$ cm apart and magnetic field in $B = 1T$. The velocity of undeflected positive ions in m/s from the velocity selector is

The measurement of voltmeter in the following circuit is ................ $V$

Which of the following (referred to a spherical mirror) do (does) not depend on whether the rays are paraxial or not?

In an $a.c.$ circuit the voltage applied is $E=E_o$ $sin$$\omega t$ The resulting current in the circuit is $I=I_osin$$\left( {\omega t - \frac{\pi }{2}} \right)$ .The power consumption in the circuit is given by

Which of the adjoining graphs represents ohmic resistance

Assertion : Conductors having equal positive charge and volume, must also have same potential.
Reason : Potential depends only on charge and volume of conductor.

A superconductor exhibits perfect

The potential energy of a particle of mass m is given by $U(x) = \left\{ \begin{array}{l}{E_0};\;\;\;0 \le x \le 1\\\,0\;;\;\;\;\,\,\,\,x > 1\end{array} \right.$ $\lambda_1$ and $\lambda_2$ are the de-Broglie wavelengths of the particle, when 0 $\leq$ x $\leq$1 and x > 1 respectively. If the total energy of particle is $2\ E_0$, the ratio $\frac{{{\lambda _1}}}{{{\lambda _2}}}$ will be

The maximum distance upto which $TV$ transmission from a $TV$ tower of height $h$ can be received is proportional to

Which among the following shows the particle nature of light?