5H40.37 - Take Apart Speaker

Code Number:
5H40.37
Demo Title:
Take Apart Speaker
Condition:
Excellent
Principle:
Forces on Current Carrying Wires
Area of Study:
Electricity & Magnetism
Equipment:
Speaker magnet assembly, speaker coil/cone assembly, 6 volt battery.
Procedure:

Take the two assembly parts from the dissected speaker and place the coil /cone part into the magnet assembly.  Connect one lead of the coil to a 6 volt battery.  As you tap the other lead to the battery, you can make the coil move or even jump completely out of the magnet.

References:
  • Grant Mellor, "The Juice-Can Speaker", Flying Tinsel, 1993, p. 110-112.
  • Rudolf F. Graf, "The Coil Moves", Safe and Simple Electrical Experiments, p. 96.

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