Why does charge given to a hollow metal sphere reside only on its surface?
If the sphere is in equilibrium, what can you say about the electric field inside the 'shell' (not the cavity) of the sphere?
sry misunderstood ur question
use gauss' law to get the answer...
Think about what (equal) charges do when you bring them close together.
Exactly, this is called the "skin-effect", as the electrons' mutual repulsion will move them away from each other and thus towards the most outer region of the metal.
A sphere is not necessary; this can easily occur in solid wires.
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