How Does A Magnet Create Electricity?


2 Answers

John Nawrocki Profile
John Nawrocki answered
Magnetic  induction was discovered by Michael Faraday.
He discovered that moving a magnet near a wire will cause current to flow through the wire.

There are lines of magnetic flux surrounding a magnet. As the magnet is moved near the wire the lines of flux from the magnet react with the electrons in the wire and result in a current flow. You can demonstrate this by duplicating some of Faraday's early experiments.

Refer to the picture:

As long as the magnet stays stationary you should see no current flow.

As you move the magnet forward you will see flow in one direction depending on the poles of the magnet.

As pull the magnet back the direction of flow should reverse.

The faster you move the magnet the stronger the current will become.

thanked the writer.
John Nawrocki
John Nawrocki commented
Thanks for the Wow.
Dan Bunker
Dan Bunker commented
Lenz had some influences in the also. Heinrich Lenz stated that if an induced current flows, its direction is always such that it will oppose the change which produced it.
Anonymous Profile
Anonymous answered
A collapsing magnetic field will cause an electric current to flow in a perpendicular direction.It's the changing in polarity of the magnetic field that causes the collapse, hence it needs to spin.

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