Encyclopedia Magnetica™

Magnetic field distribution around an energised coil (solenoid), as indicated by a grid of small compasses. The polarity of the DC current in the coil was set so that the magnetic south pole is at the top of the coil.

See also:

compasses_and_coil_magnetica.jpg

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Magnetic field polarity, Distribution of magnetic field, Compass, Coil, Solenoid, Files