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Why Must Electrostatic Field at the Surface of a Charged Conductor Be Normal to the Surface at Every Point? Give Reason? - Physics

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ConceptElectric Field Due to a Point Charge

Question

Why must electrostatic field at the surface of a charged conductor be normal to the surface at every point? Give reason?

Solution

Electric field is defined to be the gradient of potential and the surface of a conductor has a constant potential. Therefore, there is no field along the surface of the conductor and, hence, the electrostatic field at the surface of a charged conductor should be normal to the surface at every point.

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Solution Why Must Electrostatic Field at the Surface of a Charged Conductor Be Normal to the Surface at Every Point? Give Reason? Concept: Electric Field Due to a Point Charge.
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