Understanding Electrostatic Potential
The electric field at 2r from centre of a uniformly charged non conducting sphere of radius r andE .What is the electric field at distance r/2 from centre?
Two charges 5 × 10−8 C and −3 × 10−8 C are located 16 cm apart. At what point(s) on the line joining the two charges is the electric potential zero? Take the potential at infinity to be zero.