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Which law states that the induced electromotive force (emf) in a closed circuit

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Question: Which law states that the induced electromotive force (emf) in a closed circuit is proportional to the rate of change of magnetic flux through the circuit?

Options:

  1. Faraday\'s law
  2. Ampere\'s law
  3. Ohm\'s law
  4. Lenz\'s law

Correct Answer: Faraday\'s law

Solution: 

Faraday\'s law states that the induced emf in a closed circuit is proportional to the rate of change of magnetic flux.

Which law states that the induced electromotive force (emf) in a closed circuit

Practice Questions

Q1
Which law states that the induced electromotive force (emf) in a closed circuit is proportional to the rate of change of magnetic flux through the circuit?
  1. Faraday's law
  2. Ampere's law
  3. Ohm's law
  4. Lenz's law

Questions & Step-by-Step Solutions

Which law states that the induced electromotive force (emf) in a closed circuit is proportional to the rate of change of magnetic flux through the circuit?
  • Step 1: Understand what induced electromotive force (emf) means. It is the voltage generated by changing magnetic fields.
  • Step 2: Learn about magnetic flux. It refers to the amount of magnetic field passing through a surface.
  • Step 3: Know that when the magnetic flux changes, it can create an electric current in a closed circuit.
  • Step 4: Identify the law that describes this relationship. It is called Faraday's law.
  • Step 5: Remember that Faraday's law states that the induced emf is proportional to how quickly the magnetic flux changes.
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