Two equal point charges +Q and −Q are fixed 8 cm apart on a straight line
PHYSICS · Single correct · AP · Physics 2: Algebra-based · Electric Force Field and Potential · Electric Force Field and Potential
Problem
Two equal point charges +Q and −Q are fixed 8 cm apart on a straight line. In which region can a point with zero electric potential be found?
(a) At every point on a spherical surface of radius 4cm centred at the midpoint
(b) No such point exists except at infinity
(c) At every point on the perpendicular bisector of the line joining the charges
(d) At the midpoint of the line segment only