The distance between the plates of a parallel plate condenser is … - Vidyadip

MCQ

The distance between the plates of a parallel plate condenser is $\,4mm$ and potential difference is $60\;volts$. If the distance between the plates is increased to $12\,mm$, then

✓
The potential difference of the condenser will become $180\;volts$
B
The $P.D.$ will become $20\;volts$
C
The $P.D.$ will remain unchanged
D
The charge on condenser will reduce to one third

✓

Answer

Correct option: A.

The potential difference of the condenser will become $180\;volts$

a
(a) For capacitor $\frac{{{V_1}}}{{{V_2}}} = \frac{{{d_1}}}{{{d_2}}}$ $==>$ ${V_2} = \frac{{{V_1} \times {d_2}}}{{{d_1}}} = \frac{{60 \times 12}}{4} = 180\,V$

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

An electron is moving with an initial velocity $\text{v}=\text{v}_0\hat{\text{i}}$ and is in a magnetic field $\text{B}=\text{B}_0\hat{\text{j}}$. Then it's de Broglie wavelength:

In a Young's double slit experiment, the intensity of light at each slit is $I_0$. Interference pattern is observed along a direction parallel to the line $S_1 S_2$ on screen $S$. The minimum, maximum and the intensity averaged over the entire screen are respectively.

In the following diagram the work done in moving a point charge from point $P$ to point $A$, $B$ and $C$ is respectively as $W_A$, $W_B$ and $W_C$ , then

Self induction of a solenoid is

A meta sample carrying a current along $x-$ axis with density $J$ is subjected to a magnetic field $B$ (along $z-$ axis). The electric field $E$ developed along $y-$ axis is directly proportional to $J$ as well as $B$. The constant of proportionality has $SI\ unit$

When $10^{19}$ electrons are removed from a neutral metal plate, the electric charge on it is

In series $\text{L - C - R}$ resonant circuit, to increase the resonant frequency:

Your are given three equal resistances. In how many combinations can they be arranged?

A conducting square loop of side $L$ and resistance $R$ moves in its plane with a uniform velocity $v$ perpendicular to one of its sides. A magnetic induction $B$ constant in time and space, pointing perpendicular and into the plane of the loop exists everywhere. The current induced in the loop is

The circular coil of a galvanometer has fifty turns. The coil has a radius of $1\ cm$. The coil is placed in a radial magnetic field of $0. 010\ T$. The torsion coefficent of the spring on which the coil hangs is $3 \times 10^{-7}\ N-m-rad^{-1}$. Determine the deviation of the galvanometer's hand if the current through the coil is $1.0\ mA$......$^o$