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What causes electric current to flow in the loop of wire that turns between an electric generator's two permanent magnets?

A. The magnetic field of the magnets causes a mechanical force to act on the electric charges within the moving loop of wire.
B. The magnetic fields of the magnets attract the magnetic field of each of the atoms that make up the loop of wire.
C. Electric charges in the wire loop flow when the magnetic fields of the magnets frequently switch direction.
D. Electrons that flow from the magnets into the loop of wire carry mechanical energy to the electric charges within the wire.

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Final answer:

The magnetic field of the magnets exerts a mechanical force on the electric charges in the wire loop, causing torque and rotation, resulting in the conversion of electrical energy to mechanical work.


Explanation:

The electric current flows in the loop of wire that turns between an electric generator's two permanent magnets because:

  1. The magnetic field of the magnets exerts a mechanical force on the electric charges within the moving loop of wire.
  2. When a current is passed through the loops, the magnetic field exerts torque on the loops, which causes rotation due to the Lorentz force on the moving charges in the conductor.
  3. This conversion of electrical energy to mechanical work is how electric generators produce an AC voltage that drives an AC current through the loops.

Learn more about Electric current and magnetic fields here:

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