The electric potential at a distance of 0.2 m from a point charge is 900 V. The charge is
Q1. The electric potential at a distance of 0.2 m from a point charge is 900 V. The charge is
Answer: 20 nC
Explanation: q = 4πε0 * r * V = 20 nC. Wrong options miscalculate ε0 or r.