# Gauss law electric field inside a conductor [closed]

Can you mathematically prove that if there is a cavity in a conductor and no charge is placed in it, the field at all points in the cavity will be zero?

## closed as off-topic by Aaron Stevens, John Rennie, John Duffield, GiorgioP, Rory AlsopMay 5 at 16:17

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• Good, glad it helped. Some of the statements I wrote in words could be written in symbols as equations, but I didn't think this would add anything to the answer, especially since more words would be needed to explain the meaning of the symbols! I'd argue that my answer $is$ mathematical, but not written with symbols. – Philip Wood May 4 at 18:04