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In an AC generator, the induced EMF is maximum when the coil is positioned at wh

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Question: In an AC generator, the induced EMF is maximum when the coil is positioned at what angle to the magnetic field?

Options:

  1. 0 degrees
  2. 45 degrees
  3. 90 degrees
  4. 180 degrees

Correct Answer: 90 degrees

Solution: 

In an AC generator, the induced EMF is maximum when the coil is positioned at 90 degrees to the magnetic field, as this is when the rate of change of magnetic flux is greatest.

In an AC generator, the induced EMF is maximum when the coil is positioned at wh

Practice Questions

Q1
In an AC generator, the induced EMF is maximum when the coil is positioned at what angle to the magnetic field?
  1. 0 degrees
  2. 45 degrees
  3. 90 degrees
  4. 180 degrees

Questions & Step-by-Step Solutions

In an AC generator, the induced EMF is maximum when the coil is positioned at what angle to the magnetic field?
  • Step 1: Understand that an AC generator uses a coil of wire and a magnetic field to produce electricity.
  • Step 2: Know that the position of the coil relative to the magnetic field affects the induced electromotive force (EMF).
  • Step 3: Remember that the angle between the coil and the magnetic field is important.
  • Step 4: Realize that when the coil is at 0 degrees (parallel to the magnetic field), the induced EMF is zero.
  • Step 5: Understand that when the coil is at 90 degrees (perpendicular to the magnetic field), the induced EMF is at its maximum.
  • Step 6: Conclude that the maximum induced EMF occurs at 90 degrees to the magnetic field.
  • Induced EMF in AC Generators – The principle that the induced electromotive force (EMF) in an AC generator is related to the angle between the coil and the magnetic field, with maximum EMF occurring at 90 degrees.
  • Magnetic Flux Change – Understanding that the rate of change of magnetic flux through the coil is greatest when the coil is perpendicular to the magnetic field.
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