Tag: transfer of charge

Questions Related to transfer of charge

Inflate two balloons. Hang them in such a way that they do not touch each other. Rub both balloons with woollen cloth and release them. Then:

physics some natural phenomena types of charges and their interaction transfer of charges charging and discharging transfer of charge

  1. both balloons attract each other.

  2. both balloons repel each other.

  3. both balloons remain at same position.

  4. none of the above happens.

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Correct Option: B
Explanation:

The balloons will be seen to repel each other as both are charged with same polarity.

What happens when a used plastic refill is rubbed with polythene?

physics some natural phenomena types of charges and their interaction transfer of charges charging and discharging transfer of charge

  1. Only refill gets charged.

  2. Refill and polythene gets charged.

  3. Only polythene gets charged.

  4. Both gets discharged.

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Correct Option: B
Explanation:

Both of them, refill as well as polythene, gets charged by friction.

When a person combs his hair static electricity is sometimes generated by:

physics some natural phenomena types of charges and their interaction transfer of charges charging and discharging transfer of charge

  1. friction between comb and hair resulting in flow of electrons.

  2. induction between comb and hair.

  3. conducting property of hair.

  4. contact between comb and hair resulting in a charge.

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Correct Option: A
Explanation:

Static electricity, while combing dry hair, is generated by friction between comb and dry hair.

When charges move, they constitute:

physics some natural phenomena types of charges and their interaction transfer of charges charging and discharging transfer of charge

  1. energy

  2. light

  3. power

  4. electric current

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Correct Option: D
Explanation:

Moving charges constitute electric current.

Rub a glass tumbler with wool. Bring an inflated charged balloon, rubbed with wool, near refill. Then

physics some natural phenomena types of charges and their interaction transfer of charges charging and discharging transfer of charge

  1. both balloon and tumbler will repel each other.

  2. both balloon and tumbler attract each other.

  3. no reaction will be observed.

  4. the balloon will burst.

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Correct Option: B
Explanation:

When rubbed by wool, glass becomes positive and rubber becomes negative. Opposite charges attract. So, the balloon and the glass tumbler will attract each other.

The atmosphere is held to the earth by _______

physics some natural phenomena types of charges and their interaction transfer of charges charging and discharging transfer of charge

  1. gravity

  2. clouds

  3. electric force

  4. friction

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Correct Option: A

The nature of charge on the object can be detected by:

physics some natural phenomena transfer of charge types of charges and their interaction transfer of charges

  1. microscope

  2. electroscope

  3. electrometer

  4. telescope

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Correct Option: B
Explanation:

A pre-charged electroscope detects the nature of charge on a charged body.

When a charge passes from a charged object to an uncharged one, the process is called:

physics some natural phenomena transfer of charge types of charges and their interaction transfer of charges

  1. conduction

  2. induction

  3. discharging

  4. none of the above

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Correct Option: A
Explanation:

Conduction is the process in which uncharged object acquires charge when it it brought in contact with the charged object.

What happens when the end of the paper clip of electroscope is touched by hands?

physics some natural phenomena transfer of charge types of charges and their interaction transfer of charges

  1. Electric current is produced 

  2. Foil strips remain as it is

  3. Foil strips collapse

  4. None of the above

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Correct Option: C
Explanation:

Because the charges on foil strips gets discharge through air body as soon as paper clip of electroscope is touched by hand, the foil strips collapse.

Opening up of strips of an electroscope is an indication of:

physics some natural phenomena transfer of charge types of charges and their interaction transfer of charges

  1. proximity of a conductor.

  2. proximity of a charged body.

  3. proximity of an uncharged body.

  4. earth connection.

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Correct Option: B
Explanation:

When a charged body comes close to an electroscope, charges are induced to the electroscope. These charges flow down to the metal strips which open up due to repulsion for having similar charges.