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# CUET Physics Questions Electrostatic Potential and Capacitance AMBIPi

Hi CUET aspirants, Welcome to Amans Maths Blogs (AMBIPi). In this post, you will get CUET Physics Questions Electrostatic Potential and Capacitance AMBIPi. This CUET Physics Questions Electrostatic Potential and Capacitance. Before solving these CUET Physics questions, you must read CUET Physics Notes, which helps you to revise and then you must need to solve CUET Previous Years Questions Papers.

## CUET Physics Mock Test

CUET Physics Question No: 1

A charge q is placed at the centre of the line joining two equal charges Q. The system of the three charges will be in equilibrium, if q is equal

Option A : -Q/2

Option B : -Q/4

Option C : +Q/4

Option D : +Q/2

Option B: -Q/4   Suppose in the following figure, equilibrium of charge B is considered. Hence for it’s equilibrium

CUET Exam Physics Question No: 2

Inside a hollow charged spherical conductor, the potential

Option A : is constant

Option B : varies directly as the distance from the centre

Option C : varies inversely as the distance from the centre

Option D : varies inversely as the square of the distance from the centre.

Option A: is constant

Inside a hollow charged spherical conductor, the potential is constant.

CUET UG Physics Question No: 3

Charges of +10/3 × 10–9 C are placed at each of the four corners of a square of side 8 cm. The potential at the intersection of the diagonals is

Option A : 150√2 volt

Option B : 1500√2 volt

Option C : 900√2 volt

Option D : 900 volt

Option B: Potential at the centre O

CUET Domain Subject Physics Question No: 4

In the electric field of a point charge q, a certain charge is carried from point A to B, C, D and E. Then the work done

Option A : Is least along the path AB

Option B : Is least along the path AD

Option C : Is zero along all the paths AB, AC, AD and AE

Option D : Is least along AE

Option C: Is zero along all the paths AB, AC, AD and AE

ABCDE is an equipotential surface, on equipotential surface no work is done in shifting a charge from one place to another

CUET BSc Physics Question No: 5

A conductor with a positive charge

Option A : Is always at +ve potential

Option B : Is always at zero potential

Option C : Is always at negative potential

Option D : May be at +ve, zero or-ve potential

Option D: May be at +ve, zero or-ve potential

May be at positive, zero or negative potential, it is according to the way one defines the zero potential.

CUET Entrance Exam Physics Question No: 6

If E is the electric field intensity of an electrostatic field, then the electrostatic energy density is

Option A : E

Option B : E2

Option C :1/E2

Option D : E3

Option B : E

Electrostatic energy density dU/ dV = 1/2 Kℇ0 E . . dU / dV ∞E2

CUET Exam Question No: 7

Three particles, each having a charge of 10 μC are placed at the corners of an equilateral triangle of side 10 cm. The electrostatic potential energy of the system is

(Given 1/4𝛑30 = 9 x 109 N – M2/C)

Option A : Zero

Option B : Infinite

Option C : 27 J

Option D : 100 J

Option C:
27J

CUET Physics Practice Questions No: 8

Two equal charges q are placed at a distance of 2a and a third charge –2q is placed at the midpoint. The potential energy of the system is

Option A : Q2/ 8𝛑30a

Option B : 6q2/ 8𝛑3oa

Option C : 7q2/ 8 𝛑3oa

Option D : 9q2/ 8 𝛑 3oa

Option C:
7q2/ 8 𝛑3oa

CUET Physics Sample Paper Question No: 9

A parallel plate condenser has a capacitance 50 μF in air and 110 μF when immersed in an oil. The dielectric constant ‘K’ of the oil is

Option A : 0.45

Option B : 0.55

Option C : 1.10

Option D : 2.20

Option A: 0.45

Potential at any point inside the charge spherical conductor equals to the potential at the surface of the conductor i.e. Q/R

CUET Physics Mock Test Question No: 10

The capacity of parallel plate condenser depends on

Option A : The type of metal used

Option B : The thickness of plates

Option C : The potential applied across the plates

Option D : The charge on condenser will reduce to one third

Option D: The charge on condenser will reduce to one third

The capacity of parallel plate condenser depends on the separation between the plates C ∝ 1/d

CUET Physics Question No: 11

The potential to which a conductor is raised, depends on

Option A :  The amount of charge

Option B : Geometry and size of the conductor

Option C : Both (a) and (b)

Option D : Only on (a)

Option C: Both (a) and (b)

V = Q/C where Q = The amount of charge C = Capacitance which depends on geometry and size of conductor

CUET Exam Physics Question No: 12

If the dielectric constant and dielectric strength be denoted by K and x respectively, then a material suitable for use as a dielectric in a capacitor must have

Option A : High K and high x

Option B : High K and low x

Option C : Low K and low x

Option D : Low K and high x

Option A: High K and high X

High K means good insulating property and high x means able to withstand electric field or electric potential gradient to a higher value.

CUET UG Physics Question No: 13

When air is a capacitor is replaced by a medium of dielectric constant K, the capacity.

Option A : Decreases K times

Option B : Increases K times

Option C : Increases K2 times

Option D :  Remains constant

Option B: Remains Constant

CUET Domain Subject Physics Question No: 14

The capacity of a parallel plate capacitor increases with the

Option A : Decrease of its area

Option B :  Increase of its distance

Option C : Increase of its area

Option D : None of the above

Option C: Increase of its area Capacity of parallel plate capacitor C = ε0A / d

CUET BSc Physics Question No: 15

A capacitor of capacity C has charge Q and stored energy is W. If the charge is increased to 2Q, the stored energy will be

Option A : 2W

Option B : W/2

Option C : 4W

Option D : W/4

Option C: W/4

CUET Entrance Exam Physics Question No: 16

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

Option A :  The potential difference of the condenser will become 180 volts

Option B : The P.D. will become 20 volts

Option C : The P.D. will remain unchanged

Option D : The charge on condenser will reduce to one third

Option A: The potential difference of the condenser will become 180 volts

CUET Exam Question No: 17

The true statement is, on increasing the distance between the plates of a parallel plate condenser

Option A : The electric intensity between the plates will decrease

Option B : The electric intensity between the plates will increase

Option C : The electric intensity between the plates will remain unchanged

Option D : The P.D. between the plates will decrease

Option C: The electric intensity between the plates will remain unchanged. Electric field between the plates of a parallel

CUET Physics Practice Questions No: 18

Two small spheres each carrying a charge q are placed r metre apart. If one of the sphere is taken around the other one in a circular path of radius r, the work done will be equal to

Option A : Force between them × r

Option B : Force between them × 2𝛑r

Option C :Force between them / 2𝛑r

Option D : zero

Option C: Force between them / 2𝛑r

Because the charges are produced due to induction and moreover the net charge of the condenser should be zero.

CUET Physics Sample Paper Question No: 19

Two charged spheres of radii 10 cm and 15 cm are connected by a thin wire. No charge will flow, if they have

Option A : The same charged on each

Option B :  The same potential

Option C : The same energy

Option D : The same field on their surfaces

Option B: The same potential

Because current flows from higher potential to lower potential.

CUET Physics Mock Test Question No: 20

If a unit positive charge is taken from one point to another over an equipotential surface, then

Option A : work is done on the charge

Option B : work is done by the charge

Option C : work done is constant

Option D : No work is done