What is the total electric potential at a point in between the charges (along a line connecting them), a distance r away from the negative charge? Use the equation V(r) = 2KQ ln(r0/r).
a) V(r) = KQ ln(r/d)
b) V(r) = 2KQ ln(r/d)
c) V(r) = KQ ln(d/r)
d) V(r) = 2KQ ln(d/r)