Tag: transfer of charges

Questions Related to transfer of charges

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.

When a charged body is brought near an electroscope:

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

  1. the strips of foils opens up.

  2. the strips of foils close.

  3. the strips open and close simultaneously.

  4. the strips neither open nor close.

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Correct Option: A
Explanation:

When a charged body is brought near the top conducting disc of an electroscope, the disc gets induced with charges. These charges run down to the metal strips hanging from the paper clip. Now as both the strips get similar charge, those repel each other and thus open up.

In the process of earthing, how does charges get discharged to Earth?

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

  1. Through some conductor

  2. Directly to the Earth

  3. Through transformer

  4. None of the above

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Correct Option: A
Explanation:

Earthing is important for the protection of human life as well as property. For discharging of charges to the Earth some conductor is required, so that electric charges gets conducted into the Earth.

What will be the nature of charge on the metal paper clip of electroscope when a negatively charged body is brought in contact with it?

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

  1. Positive

  2. Negative

  3. Partially positive

  4. None of the above

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Correct Option: B
Explanation:

The nature of charge will be negative. Here charging is taking place due to contact and metal paper clip will bear the same charge as the charged body. This is charging by conduction.