For a polar molecule, which of the following statements is true?

The centre of gravity of electrons and protons do not coincide

The centre of gravity of electrons and protons coincide

The charge distribution is always symmetrical

The dipole moment is always zero

The diagrams below show regions of equipotential. A positive charge is moved from A to B in each diagram.

In all the four cases the work done is the same.

Maximum work is required to move q in figure (c).

Minimum work is required to move q in figure (a).

Maximum work is required to move q in figure (b).

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IMPORTANT

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Assertion: In any condition when a conducting sphere is charged then the charge on it must be distributed uniformly over it surface because it is a sphere

Reason: The surface of a conducting body is an equipotential surface.

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Important Questions on Electrostatic Potential and Capacitance

EASY

CUET (UG)

IMPORTANT

Achieve CUET (UG) Physics Practice Book>Chapter 2 - Electrostatic Potential and Capacitance>Exercise>Q 59

Assertion: A charged metal plate has the same potential at all points on its surface & different distribution of charge.

Reason: As conductors have uniform distribution of charge, so potential & charge distribution is same at every point.

EASY

CUET (UG)

IMPORTANT

Achieve CUET (UG) Physics Practice Book>Chapter 2 - Electrostatic Potential and Capacitance>Exercise>Q 60

Assertion: Two spherical cavities are made inside a conductor having charge

Q

. Two point charges

q_{1}

and

q_{2}

are kept at the centres of cavity and another charge

q

is kept outside the conductor. Electric field due to charge on outer surface of conductor is zero at a point inside the conductor.

Reason: In the above assertion electric potential is constant inside the conductor in static condition.

EASY

CUET (UG)

IMPORTANT

Achieve CUET (UG) Physics Practice Book>Chapter 2 - Electrostatic Potential and Capacitance>Exercise>Q 61

Assertion: Electric field inside the metal is zero when it is placed in external electric field.

Reason: In metal, induced electric field is equal and opposite of applied field.

EASY

CUET (UG)

IMPORTANT

Achieve CUET (UG) Physics Practice Book>Chapter 2 - Electrostatic Potential and Capacitance>Exercise>Q 62

Assertion: The whole charge of a conductor cannot be transferred to another isolated conductor.

Reason: The total transfer of charge from one to another is not possible.

EASY

CUET (UG)

IMPORTANT

Achieve CUET (UG) Physics Practice Book>Chapter 2 - Electrostatic Potential and Capacitance>Exercise>Q 63

In the following a statement of Assertion is followed by a statement of Reason.

Assertion: Charged metallic surface in electrostatic condition is always an equipotential surface.

Reason: There is no component of electric field (in electrostatic condition) parallel to charged metallic surface.

EASY

CUET (UG)

IMPORTANT

Achieve CUET (UG) Physics Practice Book>Chapter 2 - Electrostatic Potential and Capacitance>Exercise>Q 64

A point charge

Q

is placed at a distance

2 R

from centre of an uncharged metallic sphere of radius

R

, select the correct alternative

Question Image

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CUET (UG)

IMPORTANT

Achieve CUET (UG) Physics Practice Book>Chapter 2 - Electrostatic Potential and Capacitance>Exercise>Q 65

Out of two copper spheres of the same size,

x

is hollow while

y

is solid. If they are charged at the same potential, what can be said about the charges on them?

EASY

CUET (UG)

IMPORTANT

Achieve CUET (UG) Physics Practice Book>Chapter 2 - Electrostatic Potential and Capacitance>Exercise>Q 66

A solid conductor is placed in an uniform electric field as shown in figure. Which path will the lines of force follow?

Assertion: In any condition when a conducting sphere is charged then the charge on it must be distributed uniformly over it surface because it is a sphere Reason: The surface of a conducting body is an equipotential surface.

Important Questions on Electrostatic Potential and Capacitance

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Assertion: In any condition when a conducting sphere is charged then the charge on it must be distributed uniformly over it surface because it is a sphere

Reason: The surface of a conducting body is an equipotential surface.