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J3-22. Faraday Cage - Electroscope

Purpose

To demonstrate that the electric field within a closed surface is zero.

Equipment

Double wire strainer Faraday cage with electroscope, charging materials, and projection point source.

Images

J3-22

Description

Charge the two wire strainers, which are connected electrically to the electroscope indicator. With the two meshes separated, the electroscope deflects. When they are placed together, forming a closed sphere, the electroscope deflection is zero, indicating zero potential within the closed cage. ◙

J. Electrostatics And Magnetostatics

J. Electrostatics And Magnetostatics

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