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Explain why the tangential component of electric field on the surface of a conductor goes to...

Explain why the tangential component of electric field on the surface of a conductor goes to zero when the conductor is placed in electric field till such a time the drift motion of charge would have stopped

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Answer #1

When the conductor is placed in the electric field then under electrostatic condition (i.e. no more drift motion of electrons) then tangential component of electric field on the surface of conductor goes to zero.

Reason: We know that in case of conductor charge resides only on its surface under electostatic condition. Had tangential component not been zero then motion of charges on the surface will start. And so electons will be in drift motion but we are talking about no drift motion.

Hence tangential component becomes zero.

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