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Question

Write the three ways to produce magnetic fields.


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Solution

Magnetic fields

The magnetic influence on moving electric charges, electric currents, and magnetic materials is described by a magnetic field.

Three ways to produce magnetic fields

  1. A current-carrying solenoid is used. A coil with many circular close turns of insulated copper wire is a solenoid. One end of such a solenoid behaves like the north pole and the other as a south pole.
  2. A magnetic bar, round magnet, or horse-shoe magnet can be used to produce a magnetic field.
  3. A current-carrying coil also produces magnetic fields.

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