# Question: shown are two situations involving point charges on the xaxis...

###### Question details

Shown are two situations involving point charges on the x-axis
seperated by distance l.

Let the location of +*q* be the origin and choose
*V*(?) = 0 . In each case:

a. At what points on the finite *x*-axis is the total
potential zero?

b. Answer the same question for the total E-field of the charges.