Electricity and Magnetism > Electric Fields > Gauss's Law

DCS# 5B20.15

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FLEXIBLE FARADAY CAGE

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APPARATUS

Wimshurst machine or electrophorus	202-18-C
flexible faraday cage	202-33-A
camera	113-03-C

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DESCRIPTION

Charge the mesh sheet with the Wimshurst machine or the electrophorus and the foil leaves will deflect.  Bend the sheet into a circle and the leaves on the inside will drop, indicating they are no longer charged, while those on the outside remain charged.  Bend into a circle the other way and the leaves which are now on the inside will drop while the outside leaves deflect.

Use the third rod to bend the sheet into a teardrop shape to show that the smaller the radius of curvature, the greater the deflection of the leaves.