Abstract
There are two sorts of charge, positive and negative. A polythene rod rubbed with wool becomes negatively charged, and a cellulose acetate rod rubbed with wool becomes positively charged. Like charges attract and unlike charges repel. Charge may be detected using a gold leaf electroscope (see Example 14.5). If the leaf of a charged electroscope diverges further when a body is brought up to it, that body is charged. The sign of the charge on the body is the same as that on the electroscope.
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© 1986 H. J. P. Keighley
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Keighley, H.J.P. (1986). Electrostatics, Electron Beams and Radioactivity. In: Work Out Physics ‘O’ Level and GCSE. Macmillan Master Series. Palgrave, London. https://doi.org/10.1007/978-1-349-07213-2_15
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DOI: https://doi.org/10.1007/978-1-349-07213-2_15
Publisher Name: Palgrave, London
Print ISBN: 978-0-333-36788-9
Online ISBN: 978-1-349-07213-2
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