Find out the electrostalic force between two point charges placed in air (each of +1 C) if they are separately by 1 m.

Explanation

`F_(e) = (kq_(1)q_(2))/(r^(2)) = (9 xx 10^(9) xx 1 xx 1)/(1^(2)) = 9 xx 10^(9)N`.
Concept -
From the above result we can say that 1 C charge is too large to realize. In nature, charge is usually of the order of `mu C`