5H40.10 - Jumping Wires

Code Number:
Demo Title:
Jumping Wires
Magnetic Fields Around Current Carrying Wires
Area of Study:
Electricity & Magnetism
Jumping Wires and 12 V Car Battery.

Plug the jumping wires unit into the 12 volt car battery. Depending upon the direction of the current the wires will either come together or spring apart when the key switch is pushed.

CAUTION: Do not hold down on the key switch for more than 2 or 3 seconds at a time as the small wires that this demonstration uses will start to melt.

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Disclaimer: These demonstrations are provided only for illustrative use by persons affiliated with The University of Iowa and only under the direction of a trained instructor or physicist.  The University of Iowa is not responsible for demonstrations performed by those using their own equipment or who choose to use this reference material for their own purpose.  The demonstrations included here are within the public domain and can be found in materials contained in libraries, bookstores, and through electronic sources.  Performing all or any portion of any of these demonstrations, with or without revisions not depicted here entails inherent risks.  These risks include, without limitation, bodily injury (and possibly death), including risks to health that may be temporary or permanent and that may exacerbate a pre-existing medical condition; and property loss or damage.  Anyone performing any part of these demonstrations, even with revisions, knowingly and voluntarily assumes all risks associated with them.