Charging by Induction

Q.

What is repulsion force?

Q. The process of charging a conductor by bringing another charged conductor close to it without touching, is called.

1. radiation
2. conduction
3. induction
4. convection

Q.

In the process of charging a body by induction, the uncharged body is brought in contact with the charged body.

1. False

2. True

Q. The process of charging a conductor by bringing another charged conductor close to it without touching, is called

1. convection
2. conduction
3. radiation
4. induction

Q. To test if a body is charged or not you will use
a. Another uncharged body
b. A positively charged body
c. A negatively charged body
d. A positively and negatively charged body

and why?

Q.

Describe the method of charging a conductor by induction.

Q.

If two objects attract each other, which is NOT a possible explanation?

1. One must be negatively charged while the other is positively charged

2. None of these

3. One must be charged while the other is charge deficient​

4. They must have the same charge

Q.

Describe Franklin's experiment. What did he conclude from his experiment?

Q.

Question 24

Explain how lightning takes place.

Q.

Explain the charging by induction in terms of movement of electrons.

Q. Is it true that charge move from charged to uncharged body?

Q. When a negatively charged object is brought near an aluminium rod, what can be inferred about its side A?

1. Side A will be neutral
2. Side A will be negatively charged
3. Side A will be positively charged
4. Nothing can be said about side A

Q. What do you mean by electrostatic induction?

Q. Describe with the help of a diagram an instrument which can be used to detect a charged body. [4 marks]

Q. The process due to which an uncharged body acquires electric charges when held near a charged body is called :

1. conduction
2. none of these
3. convection
4. induction

Q. What do you mean by electrostatic induction?

Q. Write true or false for this statement: When an ebonite rod is rubbed with fur, the electrons move from ebonite to fur.

Q.

What is a non-contact force? Give one example for the same.

Q.

In an experiment, a charged object attracts another object. What can we understand from this?

1. The attracted object must be similarly charged

2. The attracted object must be uncharged

3. Can't say

4. The attracted object must be oppositely charged

Q.

In an experiment, a charged object attracts another object. What can we conclude from this?

1. The attracted object must be oppositely charged

2. The attracted object must be similarly charged

3. The attracted object must be uncharged

4. Can't say

Q.

Which among these is incorrect?

1. A charged body can never attract an uncharged body.

2. A body possessing charge on it is called a charged body.

3. Only insulators can be charged with static electricity.

4. A chargeless body is called uncharged body.

Q. A 45 A electric arc is made to last for 5.5 s. What is the amount of electric charge in the arc?

1. 12.22 C
2. 247.50 C
3. 8.18 C
4. 225.00 C

Q.

An uncharged conductor can be charged by:

1. Conduction

2. Induction

3. Radiator
4. All of the above

Q. A piece of paper appears to be attracted to a charged ebonite rod, even before they touch (see fig.). The charge at B is :

1. positive
2. may be positive or negative
3. no charge
4. negative

Q. A teacher wishes to show the production of electrostatic charges.
She holds a rod and rubs it with a cotton cloth. A copper rod, a glass rod, a plastic rod and a steel
rod are available.
Which two rods would both be suitable to use?

1. A glass rod and a plastic rod
2. A copper rod and a glass rod
3. A plastic rod and a copper rod
4. A plastic rod and a steel rod

Q. Two point charges separated by a distance d repel each other with a force of 9N. If the separation between them becomes 3d, the force of repulsion will be?

Q. Is body also made of electrons? If yes then why our body does not get charged on rubbing?