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The Solenoid

Solenoid is just a fancy name for a coil of wire. If we run current through the wire, the coil becomes an electromagnet.   Essentially there are three things that influence the magnetic strength of the solenoid:

  1. The amount of current in the wire.
  2. The number of "turns" of wire.
  3. The magnetic "permeability" of the core.

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