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What is the effect of increasing the number of turns in a coil on the induced EM

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Question: What is the effect of increasing the number of turns in a coil on the induced EMF when the magnetic field changes?

Options:

  1. Induced EMF decreases
  2. Induced EMF remains the same
  3. Induced EMF increases
  4. Induced EMF becomes zero

Correct Answer: Induced EMF increases

Solution: 

According to Faraday\'s law of electromagnetic induction, the induced EMF is proportional to the rate of change of magnetic flux and the number of turns in the coil. Increasing the number of turns increases the induced EMF.

What is the effect of increasing the number of turns in a coil on the induced EM

Practice Questions

Q1
What is the effect of increasing the number of turns in a coil on the induced EMF when the magnetic field changes?
  1. Induced EMF decreases
  2. Induced EMF remains the same
  3. Induced EMF increases
  4. Induced EMF becomes zero

Questions & Step-by-Step Solutions

What is the effect of increasing the number of turns in a coil on the induced EMF when the magnetic field changes?
  • Step 1: Understand what a coil is. A coil is a wire wound in a spiral shape.
  • Step 2: Learn about magnetic fields. A magnetic field is an area around a magnet where magnetic forces can be felt.
  • Step 3: Know what EMF (Electromotive Force) is. EMF is the voltage generated by a coil when the magnetic field changes.
  • Step 4: Familiarize yourself with Faraday's law. It states that the induced EMF in a coil is related to how quickly the magnetic field changes and how many turns the coil has.
  • Step 5: Realize that more turns in the coil means more wire is present to interact with the changing magnetic field.
  • Step 6: Conclude that if you increase the number of turns in the coil, the induced EMF will also increase when the magnetic field changes.
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