Electric Discharge

Q.

Which country is called the land of thunderbolt?

Q.

What is electric discharge?

1. Process of flow of electric charge from one body to another.

2. Process of separation of charge inside a body (like inside clouds).

3. Process of formation of clouds.

4. Process of accumulation of charges inside a body.

Q.

How lighting and thunder occur? What is the reason behind it?

Q.

The word electricity is derived from ___________

Q. How do clouds get charged

Q.

Lightning occurs due to:

1. Electric discharge

2. Thunder

3. Wind

4. Rain

Q.

What is the electrical discharge from clouds to a building or a tree is called?

Q. In an electroscope, the foil strips that move apart on detecting a charged body would come back to their initial position after some time. Identify the reason.

1. Bending of foil strips

2. Electric discharge

3. None of these

4. Electrostatic attraction

Q. Lightning is essentially an electric spark.

1. True
2. False

Q. Lightning is essentially an electric spark.

1. True

2. False

Q. If the lower portion of clouds are negatively charged, what effect does it have on the Earth?

1. Attract the positive charges to the surface, and cause them to accumulate

2. Attract the negative charges to the surface, and cause them to accumulate

3. No charge will be induced on the surface of the Earth.
4. None of the above

Q.

Which of of the given statements are correct regarding clouds during a thunderstorm?

1. Upper parts of the clouds are positively charged.

2. Cloud is electrically neutral (no charge) everywhere.

3. Upper parts of clouds are negatively charged.

4. Lower parts of clouds are negatively charged.

1. Only 1 is correct

2. Both 1 and 4 are correct

3. Only 2 is correct

4. Only 3 is correct

Q. Statement 1: The positive charges collect near the upper edges of the clouds and the negative charges accumulate near the lower edges.
Statement 2: The charge separation is caused due to vigorous upward movement of air currents and the downward movement of water droplets.

1. Statement 1 is true and statement 2 is false. ​
2. Statement 1 is false and statement 2 is true.​
3. Both the statements are true.​
4. Both the statements are false.​

Q.

Explain why it is safer to use a wireless telephone instead of a landline telephone during lightning.

Q. Flow of electric charges is known as an electric current.

1. True
2. False

Q. Which of the following statements is incorrect with respect to lightning between clouds?

1. There is an accumulation of positive charges near the ground

2. The ground is neither positively charged nor negatively charged

3. When a charged cloud comes close to another cloud, it induces an opposite charge in the second cloud.

4. There is an accumulation of negative charges near the ground

Q.

What happens during the development of thunderstorms?

1. Air current moves downwards, water droplets move downwards

2. Air current moves downwards, water droplets move upwards

3. Air current moves upwards, water droplets move downwards

4. Air current moves upwards, water droplets move upwards

Q.

Why is the track of lightening zig-zag?

Q.

What do you see if you look at the clouds closely with electroscope?

1. Upper parts of the clouds are positively charged.

2. Cloud is electrically neutral (no charge) everywhere.

3. Upper parts of clouds are negatively charged.

4. Lower parts of clouds are negatively charged.

Q.

is a high-energy electric discharge.

Q. Why did not Benjamin Franklin did not died while doing the experiment of electricity

Q.

Identify the phenomenon in which electric discharge occurs.

1. Volcano eruption

2. Tsunami

3. Lightning

4. Earthquake

Q. Which of the following are true, during a lightning?

1. A loud sound will be heard
2. A bright light will be seen
3. There will be a huge wind carrying light
4. None of the above

Q.

Which of the following shows the characteristics of lightning?

1. It happens through the process of electric discharge between two or more clouds or between clouds and the earth.

2. Positive charges are accumulated at the bottom of the clouds.

3. Negative charges are accumulated on the ground.

4. Charge separation doesnot happen in the clouds.

Q.

How does electric discharge in lightning occur if air is a bad conductor?

1. Air becomes a good conductor when lightning occurs.

2. Magnitude of accumulated charges in clouds is very high.

3. Water particles in the air help in flow of charges.

4. Air has no role in the electric discharge.

Q. Statement 1: The positive charges collect near the upper edges of the clouds and the negative charges accumulate near the lower edges.
Statement 2: The charge separation is caused due to vigorous upward movement of air currents and the downward movement of water droplets.

1. Statement 1 is true and statement 2 is false. ​
2. Statement 1 is false and statement 2 is true.​
3. Both the statements are true.​
4. Both the statements are false.​

Q. The solid water (or hailstones) falling from the upper portion of the cloud carry electrons with them, leaving the upper portion positively charged.

1. True

2. False

Q.

What happens during the development of thunderstorms?

1. Air current moves upwards, water droplets move upwards

2. Air current moves downwards, water droplets move downwards

3. Air current moves downwards, water droplets move upwards

4. Air current moves upwards, water droplets move downwards

Q. Lightning is essentially an electric spark.

1. False

2. True

Q. Which of the following are true, during a lightning?

1. A loud sound will be heard
2. A bright light will be seen
3. There will be a huge wind carrying light
4. None of the above