Connecting wire from battery terminal to electroscope

AI Thread Summary
Touching a wire from a battery terminal to an electroscope can cause it to deflect if the battery voltage is sufficiently high, typically requiring several hundred to a few thousand volts. For the electroscope to respond, the other terminal of the battery must be grounded. A practical example of this phenomenon is illustrated by the "Zamboni Pile," used in the Oxford Electric Bell. The electroscope's deflection indicates the transfer of charge from the battery. Overall, the interaction between the battery and electroscope depends on voltage and grounding conditions.
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What would happen to an electroscope if a wire from the negative or positive terminal of a battery is touched to an electroscope?

Will the electroscope deflect or will it do nothing?
 
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If the battery voltage is high enough it will deflect. But the other terminal of the battery needs to be grounded.
You'd need a battery with a few hundred or a few thousand volt.
e.g. a "Zamboni Pile" like the one used in the Oxford Electric Bell
http://en.wikipedia.org/wiki/Oxford_Electric_Bell
 
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