Question

A point charge q is placed at origin . How does the electric field due to the charge vary with distance r from the origin?

Answer 1

Explanation:

Electric fields are caused by electric charges, described by Gauss's law, or varying magnetic fields, described by Faraday's law of induction. Together, these laws are enough to define the behavior of the electric field as a function of charge repartition and magnetic field.

Answer 2

Answer:

Explanation:

The electric field intensity E=|E⃗ | due to a charge q in the origin, at a point P at a distance r away from q, is inversely proportional to the square of the distance r; it’s also directly proportional to the charge q, of course.

E=14πϵ0qr2

This can be easily proven using Gauss’s law.