Locations A = a, 0, 0 and B = a, 0, 0 are on the +x axis, as shown in Figure 17.66. Four possible expressions for the electric field along the axis are given below. For each expression for the...

Locations A = a, 0, 0 and B = a, 0, 0 are on the +x axis, as shown in Figure 17.66. Four possible expressions for the

electric field along the axis are given below. For each expression for the electric field, select the correct expression (1–8)

for the potential difference VA − VB. In each case K is a numerical constant with appropriate units.