Question

Electric field intensity, E can be defined as the electric (Coulomb) force on a unit test (1C) charge. Find the electric field intensity at a distance, d from the center of a +Q charged proton. use k as Coulombe constant.

Answer 1

Explanation:

Electric field intensity E is defined as the electric (Coulomb) force on a unit test (1 C) charge. Mathematically, it is given by :

$E=\dfrac{F}{q}$

The electric force is given by :

$F=k\dfrac{qQ}{d^2}$

Where

Q and q are electric charges

d is the distance between charges

The electric field intensity at a distance d from the center is given by :

$E=\dfrac{k\dfrac{qQ}{d^2}}{q}$

So,

$E=\dfrac{kQ}{d^2}$

Hence, this is the required solution.