Electric field in an arbitrary cavity inside a conductor

[shinobi12]

Homework Statement

Show the electric field inside an empty cavity in a conductor is zero, even if there is a charge outside the conductor. If a charge is placed inside the cavity, will there be an electric field outside the conductor. Explain Clearly. Assume that both the conductor and cavity are arbitrary of both shape and size

Homework Equations

The Attempt at a Solution

 

[gabbagabbahey]

Hi shinobi,

As per PF rules, you are required to show some attempt at the problem before we help you.

Hint: Think Gauss' Law