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Gold Leaf Electroscope

A gold leaf electroscope is used to detect charge. It consists of two parallel strips of thin, flexible gold foil hanging from a vertical metal rod. The electroscope is encased in a glass case on a conducting base.The charge to be tested is applied to a metal plate attached to the top of the rod.

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Specification: OCR Physics A (H556), A-level, 6.2.1 Point and spherical charges and 6.2.3 Uniform electric field. Topic: Electric Fields.

Key terms in this lesson

alpha radiation: Ionising radiation consisting of alpha particles, each made of two protons and two neutrons, emitted from an unstable nucleus.
beta radiation: Ionising radiation consisting of high-speed electrons, or positrons, emitted from an unstable nucleus.
gamma radiation: Ionising electromagnetic radiation emitted from the nucleus of an unstable atom, usually following alpha or beta emission.

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