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A loop of wire is placed in a uniform magnetic field. What happens to the induce

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Question: A loop of wire is placed in a uniform magnetic field. What happens to the induced EMF if the area of the loop is increased?

Options:

  1. Increases
  2. Decreases
  3. Remains the same
  4. Depends on the magnetic field strength

Correct Answer: Increases

Solution: 

According to Faraday\'s law of electromagnetic induction, the induced EMF is directly proportional to the rate of change of magnetic flux, which increases with an increase in the area of the loop.

A loop of wire is placed in a uniform magnetic field. What happens to the induce

Practice Questions

Q1
A loop of wire is placed in a uniform magnetic field. What happens to the induced EMF if the area of the loop is increased?
  1. Increases
  2. Decreases
  3. Remains the same
  4. Depends on the magnetic field strength

Questions & Step-by-Step Solutions

A loop of wire is placed in a uniform magnetic field. What happens to the induced EMF if the area of the loop is increased?
  • Step 1: Understand that a loop of wire in a magnetic field can have an induced EMF (electromotive force).
  • Step 2: Know that the induced EMF is related to the magnetic flux through the loop.
  • Step 3: Recognize that magnetic flux is calculated as the product of the magnetic field strength and the area of the loop (Flux = Magnetic Field x Area).
  • Step 4: If the area of the loop increases, the magnetic flux through the loop also increases.
  • Step 5: According to Faraday's law, the induced EMF is directly proportional to the change in magnetic flux.
  • Step 6: Therefore, if the area of the loop increases, the induced EMF will also increase.
  • Faraday's Law of Electromagnetic Induction – The induced EMF in a circuit is proportional to the rate of change of magnetic flux through the circuit.
  • Magnetic Flux – Magnetic flux is the product of the magnetic field strength and the area through which the field lines pass.
  • Induced EMF – Induced EMF is the voltage generated by a change in magnetic flux in a closed loop.
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