Electricity and Magnetism Questions

The flow of electrons is referred to as electricity. Based on whether the electrons are at rest or in motion, electricity is described as being either static or dynamic. Elements like silver, gold, and copper possess many free electrons and make good conductors. Insulators do not conduct electrical current. The conductivity of semiconductors lies in between the characteristics of conductors and insulators. Germanium and silicon are the best examples of semiconductors.

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Important Electricity and Magnetism Questions with Answers

1. What is electricity?

The flow of electrons from one section of the circuit to another is known as electricity.

2. Can the gravitational field be seen and felt?

Magnetic fields like gravitational fields cannot be seen or touched.

3. Unit of electric power is _____

1. Radians
2. Watts
3. Joules
4. Seconds

Answer: b) Watts

Explanation: The SI unit of power is the watt, one joule per second.

4. State true or false: A moving electric charge generates a magnetic field.

1. TRUE
2. FALSE

Answer: a) TRUE

Explanation: When an electrical charge moves or electricity passes through a wire magnetic field in a circular is created.

5. The positive charge is known as _____

1. Electron
2. Neutron
3. Proton
4. None of the option

Answer: c) Proton

Explanation: A proton is a positively charged stable subatomic particle. One or more protons are present in the nucleus of every atom.

6. 6. Which type of electricity is used to power up electronic devices?

1. Current Electricity
2. Static electricity

Answer: a) Current Electricity

Explanation: The flow of electrons is known as current electricity.

8. Choose YES or NO: Static electricity is the electric field developed due to the stationary charges.

1. YES
2. No

Answer: a) YES

Explanation: Electric charges that build up on the surface of materials or substances contributes to static electricity.

9. Ceramic is a _____

1. Conductor
2. Semiconductor
3. Insulator
4. None of the options

Answer: c) Insulator

Explanation: Insulators do not conduct electricity very well or not at all.

10. State true or false: Unlike poles repel and like attract.

1. TRUE
2. FALSE

Answer: b) FALSE

Explanation: Unlike poles attract each other and like poles repel each other.

The video explains the fundamental concepts of electromagnetism.

Practice Questions

1. What is a magnet?
2. Define electromagnetism.
3. What is a conductor?
4. What is a semiconductor?
5. Give three examples of insulators.