troubleshooting Question

basic experiment to show conductivity of people

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andieje asked on
Math / Science
3 Comments1 Solution433 ViewsLast Modified:

I am reading about a very basic experiment to show the conductivity of people:

1. Take plates of copper and zinc
2. Connect plates to a voltmeter (should read about 0.5 to 1.0V)
3. Get person to put one hand on each plate to complete the circuit

The electrochemical potential between copper and zinc causes the voltage. But apparently the voltage will change when people touch the plates and people with the sweatiest palms will have the highest voltage.

Please could you explain how people are affecting the voltage?

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