Human Conductor Circuit

From UO Physics Demonstration Catalog

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Human conductor.jpg

Description: A safety bulb is lit up when a conductive path connects the two leads. Works with upwards of 20 people. Brightness can vary with resistance and quality of contact to double as a good demonstration of resistance as well as conduction. You might also wet your hands and touch the leads to show a sudden decrease in resistance. Inserting a metal rod, a plastic rod, and a resistive material in the circuit can show differences between conductors and insulators. NOTE: Does not work if people in circuit are wearing gloves.

Location:

  • Bulb and Holder: DR 114
  • Metal Rod: DR 122
  • Plastic Rod: DR 68