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AC Versus DC Demo (EM-H-AD)

AC Versus DC Demo (EM-H-AD)

Demonstrates that the direction of current flow affects the magnetic forces.


1.  Yellow light bulb
2.  Strip of magnets taped together
3.  DC plug-in unit (rectifier)
4.  Variac

  • Description

    Product Description


    1. Plug the light bulb unit into the wall socket and hold the magnet carefully near the top of the light bulb until the filament moves quickly back and forth.
    2. Insert the plug into the rectifier to convert the current to DC and repeat as above.  Note that with DC  the filament now just  bends towards the magnet and stays there.