Why do the volt measurements of my potato battery fluctuate?

Subject: Why do the volt measurements of my potato battery fluctuate?

Date: Sat Mar 18 12:55:28 2000
Posted by Alex West
Grade level: 4-6 School: Pacific School
City: Stockton State/Province: CA Country: USA
Area of science: Physics
ID: 953405728.Ph

Message:


I am using a copper lead and a stainless steel lead into a potato and a 
volt meter to get mV readings.  When I first insert the leads I get a 
number that starts going down really fast at first, then slower, even 
after 24 hours.

Re: Why do the volt measurements of my potato battery fluctuate?

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