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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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