Electromagnetic Induction

What was the initial method known for generating electric current before Faraday's experiments?

• Using solar power

• Using mechanical energy

• Using magnetic fields

• Using batteries

What did Faraday use to detect the flow of electric current in his experiments?

• A light bulb

• A voltmeter

• A resistor

• A galvanometer

What was a key observation that led to the discovery of electromagnetic induction?

• Only moving magnets can generate electricity

• Changing magnetic fields can induce electric currents

• Steady magnetic fields can generate electricity

• Electric fields can create magnetic fields

What happens when the magnetic field through a coil changes?

• It reduces electrical resistance

• It induces a voltage or current

• It creates a permanent magnet

• It generates heat

What modern application uses the principle of electromagnetic induction?

• Electric generators

• LED lighting

• Solar panels

• Battery manufacturing