Electric field due to a point charge

First, we shall look for the symmetry of the field. Clearly the field is spherically symmetric. If we enclose the charge in a sphere of radius R, the magnitude of electric field will be same at any point on the surface.

By Gauss law, [ q

[ q

This is the same result as given by Coulomb's law.

First, we shall look for the symmetry of the field. Clearly the field is spherically symmetric. If we enclose the charge in a sphere of radius R, the magnitude of electric field will be same at any point on the surface.

By Gauss law, [ q

_{enc}= q][ q

_{enc}= q]This is the same result as given by Coulomb's law.

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