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When a glass rod is rubbed with a piece of silk cloth, then

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Important Questions on Electrostatics

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Physics>Electricity and Magnetism>Electrostatics>Methods of Charging

Two identical conducting spheres A and B carry equal charge. They are initially separated by a distance much larger than their diameters and the force between them is F. A third identical conducting sphere C is uncharged. Sphere C is first touched to A, then to C and removed. As a result, the force between A and B now is

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Physics>Electricity and Magnetism>Electrostatics>Methods of Charging

Two isolated conducting spheres

S_{1}

and

S_{2}

of radius

\frac{2}{3} R

and

\frac{1}{3} R

have

12 μ C

and

- 3 μ C

charges, respectively, and are at a large distance from each other, They are now connected by a conducting wire. A long time after this is done the charges on

S_{1}

and

S_{2}

are respectively:

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Physics>Electricity and Magnetism>Electrostatics>Methods of Charging

A body can be negatively charged by

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Physics>Electricity and Magnetism>Electrostatics>Methods of Charging

Two positive charges _____ each other.

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Physics>Electricity and Magnetism>Electrostatics>Methods of Charging

A glass rod rubbed with silk acquires _____ charge.

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Physics>Electricity and Magnetism>Electrostatics>Methods of Charging

A glass rod is rubbed with silk. Explain the charging of the glass rod and the silk on the basis of electron movement.

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Physics>Electricity and Magnetism>Electrostatics>Methods of Charging

When a glass rod is rubbed with a piece of silk cloth the rod

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Physics>Electricity and Magnetism>Electrostatics>Methods of Charging

Two negative charges _____ each other.

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Physics>Electricity and Magnetism>Electrostatics>Methods of Charging

When charges move, they constitute an ____________ current.

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Physics>Electricity and Magnetism>Electrostatics>Methods of Charging

Explain why a charged balloon is repelled by another charged balloon whereas an uncharged balloon is attracted by a charged balloon.

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Physics>Electricity and Magnetism>Electrostatics>Methods of Charging

What will you observe when the metal top of an electroscope is touched with a positively charged object?

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Physics>Electricity and Magnetism>Electrostatics>Methods of Charging

What are the two kinds of electric charges?

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Physics>Electricity and Magnetism>Electrostatics>Methods of Charging

An ebonite rod rubbed with fur is suspended near another ebonite rod rubbed with fur. State your observation and give a reason to support your answer.

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Physics>Electricity and Magnetism>Electrostatics>Methods of Charging

There exist _____ (two/three) types of charges.

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Physics>Electricity and Magnetism>Electrostatics>Methods of Charging

The process of transferring of charge from a charged object to the earth is called ______________.

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Physics>Electricity and Magnetism>Electrostatics>Methods of Charging

The electrical charges generated by rubbing are _________.

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Physics>Electricity and Magnetism>Electrostatics>Methods of Charging

A positively charged object repels another charged object kept close to it. What is the nature of charge on the other object?