Question

Two particles, each of mass m and carrying charges Q, are separated by some distance. If they are in equilibrium under mutual gravitational and electrostatic  forces then Q/m (in C/kg) is of the order of​

Answer 1

Explanation:

 : Gravitational force = Electrostatics force

Let the distance between the rwo charges be r.

⇒r2G(m)m=r2K Q .Q

⇒KG=m2Q2

⇒9×1096.67×10−11=mQ

∴mQ is the order of 10−10