Transfer by Friction

Q. When two different bodies are charged by rubbing against each other:

1. They acquire equal and like charges.
2. They acquire equal and unlike charges.
3. They acquire unequal and like charges.
4. They do not acquire any charge.

Q. When a positively charged glass rod is made to touch the metal knob of an electroscope, the leaves of the electroscope become and are each other.

1. positively charged
2. negatively charged
3. attracted towards
4. moved away from

Q.

When two inflated balloons are rubbed with a woollen cloth, they acquire _______ charge.

Q.

Write true or false for this statement:
If a glass rod rubbed with silk is brought near the cap of a negatively charged electroscope, the divergence of leaves will decrease.

Q. A glass rod is rubbed with silk to make it charged. Now, touch both the balls with this glass rod. The balls each other.

1. start attracting
2. start repelling
3. have no change on

Q. Which of these is/are methods of charging?

1. Charging by friction
2. Charging by induction
3. Charging by rotation
4. Charging by motion

Q. Which of the following cannot be charged easily by friction?​

1. A plastic scale​
2. A copper rod​
3. A woollen cloth​
4. An inflated balloon​

Q. Due to charging by friction, negatively charged particles accumulate at the bottom of clouds.

1. False
2. True

Q. When a positively charged body is brought near to a neutral body, the in the neutral body get aligned towards the positively charged body.

1. protons
2. electrons
3. neutrons

Q. When a positively charged glass rod is made to touch the metal knob of an electroscope, the leaves of the electroscope become and are each other.

1. positively charged
2. negatively charged
3. attracted towards
4. moved away from

Q. In the method of charging by rubbing, helps in transfer of charges.

1. gravitation
2. friction
3. magnetism

Q. Which of the following cannot be charged easily by friction?

1. Plastic scale
2. Copper rod
3. Inflated balloon
4. Woollen cloth