Electric Potential

Question

Electric Potential Formula: V= K*q/r

Electric potential energy Formula: UE= Kq1q2/r

What is the electric potential energy between a particle with 1*10^-9 C of charge and a particle with -1*10^-9 C of charge when they're 0.1 meters apart?

What is the electric potential 0.01 meters away from a particle with 1*10^-9 C of charge?

Answer 1

PE = Kq1*q2/ r

K = 9*10 ⁹

PE = - 9*10^-8 J

Potential = Kq/r= 900 Volt