Tag: some natural phenomena

Quizzes (10) Questions (151)

Questions Related to some natural phenomena

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.

Multiple choice physics some natural phenomena how lightning occurs? the story of lightning advanced of lightning

How does lightning occurs between two charges within the cloud?

  1. When two negative charges grow large enough then a giant lightning sparks occurs

  2. When positive and negative charges grow large enough then a giant lightning sparks occurs

  3. When two positive charges grow large enough then a giant lightning sparks occurs

  4. None
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Build up of electrostatic charge in the clouds results in lightning. During this event, one region of the cloud is accumulated with positive charge whereas the other region is accumulated with negative charge.Hence when positive and negative charges grow large enough ,the air present being non-conductive no more resists the flow of charges and electric discharge can be seen in the form of giant lightning sparks.

Multiple choice physics some natural phenomena how lightning occurs? the story of lightning advanced of lightning

What is meant by lightning?

  1. It is sudden electrostatic discharge during an electrical storm between electrically charged regions of cloud.

  2. It is sudden electrostatic discharge during an electrical storm between non-electrically charged regions of cloud.

  3. It is unsudden electrostatic discharge during an electrical storm between electrically charged regions of cloud.

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

Lightning occurs when there is a build up of the electrostatic charge in clouds. Regions within the cloud, one builds up a positive whereas other builds up a negative charge.