Earthing and Electrostatic Induction

What is the purpose of electrostatic induction?

Which of the following material cannot be charged easily by friction?

In the figure given below, which of the following could be referred to as A?

Which of the following materials can be used to check the flow of electric current?

The electrical charges produced by rubbing are called _____ charges.

Which of the following device is used to check whether a body is charged or not?

What is the name of the method for charging a conductor without bringing a charged body in contact with it ?

What do you mean by earthing?

Which one of the following statements is not true for charging a body by the method of conduction?

Two metallic spheres, one positively charged and the other neutral are kept on two insulating stands are kept near each other. Which one of the following statements is true?

Five Styrofoam balls are suspended from insulating threads. Several experiments are performed on the balls and the following observations are made -

(i) Ball A repels C and attracts B

(ii) Ball D attracts B and has no effect on E

(iii) A negatively charged rod attracts both A and E.

An electrically neutral Styrofoam ball gets attracted if placed nearby a charged body due to induced charge. What are the charges, if any, on each ball

An electrical charge can be transferred from a charged object to another through a ________________.

When a charged glass rod is brought near a charged plastic straw rubbed with polythene

When a plastic refill is rubbed with polythene, it acquires a small ___________ charge.

Which of the following cannot be charged easily by friction?

Assertion: If a point charge q is placed in front of an infinite grounded conducting plane surface, the point charge will experience a force.

Reason: This force is due to the induced charge on the conducting surface which is at zero potential.

The diagram shows an earthed conducting sphere held close to a positively charged dome.








What is the charge and potential of the conducting sphere?

A neutral metallic sphere is placed near a negative point charge (outside the sphere). The net charge on sphere is,

A neutral metallic sphere is placed near a negative point charge (outside the sphere). The net charge on sphere, then 

In a system used for spraying cars, a car body is positively charged. Neutral droplets of paint are then attracted to the car because the positive car body induces charge on the droplets of paint. Which diagram best shows the charge pattern?