Article,

An instrumental method to identify electric charge types with a simple device

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Physics Education, 50 (4): 393 (2015)

Abstract

In this study, an easy and enjoyable activity to determine the type of electric charge is presented, using a readymade electronic test screw. A four-way usage of the tester is explained with an electroscope. In the activity, ebonite and glass rods are negatively and positively charged by rubbing with paper sheets, respectively.

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