+++++AF1F2BθThe electroscopeThe electroscope is a simple device that is used to detect charges. It consists of two metal foils F1and F2hinged 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 θbetween the foils is a measure of the charge placed on the electroscope
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