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A circular loop of wire is placed in a uniform magnetic field. If the magnetic f

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Question: A circular loop of wire is placed in a uniform magnetic field. If the magnetic field is increased, what happens to the induced EMF in the loop?

Options:

  1. Increases
  2. Decreases
  3. Remains constant
  4. Becomes zero

Correct Answer: Increases

Solution: 

According to Faraday\'s law of electromagnetic induction, an increase in magnetic field through the loop induces an EMF in the loop.

A circular loop of wire is placed in a uniform magnetic field. If the magnetic f

Practice Questions

Q1
A circular loop of wire is placed in a uniform magnetic field. If the magnetic field is increased, what happens to the induced EMF in the loop?
  1. Increases
  2. Decreases
  3. Remains constant
  4. Becomes zero

Questions & Step-by-Step Solutions

A circular loop of wire is placed in a uniform magnetic field. If the magnetic field is increased, what happens to the induced EMF in the loop?
  • Step 1: Understand that a circular loop of wire is placed in a magnetic field.
  • Step 2: Know that a magnetic field is a region where magnetic forces can be felt.
  • Step 3: Learn about Faraday's law of electromagnetic induction, which states that a change in magnetic field can induce an electromotive force (EMF) in a loop.
  • Step 4: Recognize that if the magnetic field strength increases, it means there is a change happening in the magnetic field.
  • Step 5: Conclude that this change (increase) in the magnetic field will induce an EMF in the loop.
  • Faraday's Law of Electromagnetic Induction – This law states that a change in magnetic flux through a loop induces an electromotive force (EMF) in the loop.
  • Magnetic Flux – Magnetic flux is the product of the magnetic field strength and the area of the loop through which the field lines pass.
  • Induced EMF – Induced EMF is the voltage generated in the loop due to a change in magnetic flux.
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