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andieje
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basic experiment to show conductivity of people

Hi

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?

thanks
Math / Science

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andieje

8/22/2022 - Mon
maeltar

I believe it's due to the water content of the body, the more hydrated the person is the easier the current will pass through. Hense people with sweaty palms will pass more current.

The body is a conductor, but a poor one basically.
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andieje

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