Tag: physics

Quizzes (598) Questions (13441)

Questions Related to physics

Multiple choice physics heat energy transfers heat energy heat, internal energy and work internal energy

According to law of conservation of energy, heat energy is transformed into which two types of energy?

  1. Kinetic and potential energy

  2. Mechanical and potential energy

  3. Kinetic and thermal energy

  4. Nuclear and potential energy
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

According to law of conservation of energy, heat energy is transformed into Kinetic and potential energy

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

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

  1. Electric current is produced 

  2. Foil strips remain as it is

  3. Foil strips collapse

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
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.

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

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

  1. proximity of a conductor.

  2. proximity of a charged body.

  3. proximity of an uncharged body.

  4. earth connection.
Reveal answer Fill a bubble to check yourself
B Correct answer
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.

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

When a charged body is brought near an electroscope:

  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.
Reveal answer Fill a bubble to check yourself
A Correct answer
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.

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

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

  1. Through some conductor

  2. Directly to the Earth

  3. Through transformer

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
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.

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

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?

  1. Positive

  2. Negative

  3. Partially positive

  4. None of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
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.

Multiple choice physics some natural phenomena transfer of charge types of charges and their interaction transfer of charges
When a foil strips get touched by your hand, it loses charge to the Earth through your body. This process is also referred to as ________.

  1. earthing

  2. discharging

  3. both A and B

  4. none of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

When we touch the strips, the charges get discharged through our body to the Earth and this process is known as earthing.