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).

E M B I B E

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

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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

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Important Questions on Electrostatic Potential and Capacitance

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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?

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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?

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Achieve CUET (UG) Physics Practice Book>Chapter 2 - Electrostatic Potential and Capacitance>Exercise>Q 67

An astronaut is in an all-metal chamber outside the space station when a solar storm results in the deposit of a large positive charge on the station. Which statement is correct?

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Achieve CUET (UG) Physics Practice Book>Chapter 2 - Electrostatic Potential and Capacitance>Exercise>Q 68

An uncharged sphere of metal is placed inside a charged parallel plate capacitor. The electric lines of force will look like

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Achieve CUET (UG) Physics Practice Book>Chapter 2 - Electrostatic Potential and Capacitance>Exercise>Q 69

What is the ratio of the electrostatic potentials at one corner and in the centre point of a uniformly charged cube of the conductor? (The potential is considered