Faraday's Experiment

Q. Name the scientist who discovered the electromagnetic induction?

1. Ampere
2. Faraday
3. Oersted
4. Galileo

Q. The principle of electromagnetic induction was given by .

1. Oersted
2. Faraday
3. Ampere

Q. Len'z law is a consequence of law of conservation of energy.

1. True
2. False

Q. For a step down transformer, the turns ratio will be greater than 1.

1. True
2. False

Q. A transformer always use a direct current (DC) supply.

1. True
2. False

Q. The direction of induced current is obtained by rule.

1. Fleming's left hand
2. Fleming's right hand
3. Right hand thumb

Q. Faraday's law states that change in the magnetic flux linked with a coil generates electric current in the coil.

1. True
2. False

Q. Len'z law is a consequence of law of conservation of energy.

1. True
2. False

Q. An electric current is induced in a circuit when:

1. A magnet is brought close to a wire.
2. A magnet is kept close to a wire.
3. A magnet is taken away from a wire.
4. A magnet is kept far from a wire.

Q. Transformers are used to convert high voltages to the low voltages only.

1. True
2. False