electric field near the surface of conductor explain in detal

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Q. The electric field near to the surface of the charged conductor

Q. Assertion :When a charge is brought near a conductor then a very small value current is established in the conductor. Reason: Since electric field inside the conductor has to be zero so to overcome the electric field of the external charge, internal charge of conductor is collected all accross the surface.

Q. If

σ

is the surface charge density, then electric field at a point near the surface of a charged conductor kept in a dielectric medium of constant

k

is given by

Q. Explain why the electric field inside a conductor placed in an external electric field is zero.

A hollow charged conductor has a tiny hole cut into its surface. Show that the electric field in the hole is , where is the unit vector in the outward normal direction, and is the surface charge density near the hole.

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