Physics

Problem

Two point charges,

+q

x=-d

and

-q

x=+d

, are fixed on the

x

-axis. Along the

x

-axis, at which location is the electric potential equal to zero? Assume the potential is zero at infinity. a) Anywhere for

x>d

b) Exactly at

x = 0

c) Exactly at

x = \dfrac{d}{2}

d) There is no point on the

x

-axis where the potential is zero