Electric Potential of Two Point Charges · CAP 2002 #8
Physics · electromagnetism
Problem
Two point-charges, each with a charge of +1 μC, lie some finite distance apart. On which of the segments of an infinite line going through the charges is there a point, a finite distance away from the charges, where the electric potential is zero, assuming that it vanishes at infinity?
(a) Between the charges only.
(b) On either side outside the system.
(c) Impossible to tell without knowing the distance between the charges.
(d) Nowhere.