Question

The law that describes the force as directly proportional to magnitude of charges and inversely proportional to the distance between the charges is known as :

• A. Newton's law
• B. Coulomb's law
• C. Gauss's law
• D. Ohm's law

Answer 1

The correct option is B Coulomb's law

Newton's law : force $F=ma$ where m=mass and a=acceleration

Coulomb's law : force $F=\frac{k{q}_1{q}_2}{r^2}$ where $q_1,q_2$ are charges and $r=$ separation of charges and $k=$ proportionality constant.

Gauss's law : the electric flux $\varphi =\frac{q}{{ϵ}_0}$

Ohm's law : Potential across a wire of resistance R is $V=IR$ where I is the current.