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JEE PHYSICS MCQ: ELECTRIC POTENTIAL AND CAPACITANCE

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Two capacitors connected in parallel having the capacities

{C_1}

and

{C_2}

are given

'q'

charge, which is distributed among them. The ratio of the charge on

{C_1}

  and

{C_2}

 will be

View answer and explanation

Correct option: A

\frac{{{C_1}}}{{{C_2}}}

Option A (

\frac{{{C_1}}}{{{C_2}}}

) is correct because in a parallel combination, the voltage across both capacitors is the same, leading to the charge ratio being equal to the capacitance ratio.

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The potential at a point distance

x

(measured in

\mu \mathrm{m}

) due to some charges situated on the

x

axis is given by

V(x)=\frac{20}{x^2-5} \mathrm{V}

. The electric field at

x=5 \mu \mathrm{m}

is given by: A parallel plate capacitor is connected to a 5V battery and charged. The battery is then disconnected and a glass slab is introduced between the plates. Then, the quantities that decrease are A conducting sphere of radius

R

is given a charge

Q

. The electric potential and the electric field at the centre of the sphere respectively are Two capacitors when connected in series have a capacitance of

3\mu F,\,

and when connected in parallel have a capacitance of

16\mu F

. Their individual capacities are Statement-1: If temperature is increased, the dielectric constant of a polar dielectric decreases whereas that of a non-polar dielectric does not change significantly.
Statement-2: The magniude of dipole moment of individual polar molecule decreases significantly with increase in temperature. An electric dipole when placed in a uniform electric field

E

will have minimum potential energy, if the positive direction of dipole moment makes the following angle with

E