Demo21 - The electroscope + A The electroscope is a simple...

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+ + + + + A F 1 F 2 B θ The electroscope The electroscope is a simple device that is used to detect charges. It consists of two metal foils F 1 and F 2 hinged at point B. When charges are placed at point A they spread to the foils. The charges on the foils have the same sigh, thus the foils repel each other. The angle θ between the foils is a measure of the charge placed on the electroscope
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- - - - plastic rod Charging the electroscope by conduction We touch the top of the electroscope with a negatively charged plastic rod. Some of the negative charge is transferred from the rod to the electroscope foils
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- - - - - plastic rod - Determine the sign of the charge on the electroscope ( negative in this case) Use a negatively charged plastic rod. We approach the rod to the top of the electroscope (but do not touch it)
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This note was uploaded on 03/26/2010 for the course PHY 108 taught by Professor Iashvili during the Spring '08 term at SUNY Buffalo.

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Demo21 - The electroscope + A The electroscope is a simple...

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