Question

why must electrostatic field at the surface of a charged conductor be normal to the surface of every point? give reasons

Answer 1

here is u r answer
Characteristic of conductors at electrostaticequilibrium is that the electric field upon the surface of the conductor is directed entirely perpendicular to the surface. ... Therefore, the electric field must be entirely perpendicular to the conducting surface for objects that are at electrostatic equilibrium.

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Answer 2

Answer:

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Explanation:

So that tangent on charged conductor gives the direction of the electric field at that point.