[问答题]
Two equal but opposite charjb g1fq vovnpsk8kgm/2tp2 :s02*9ee ges are separated by a distance d, as shown in F/kt : n)aofkd 3it-a3xwm*u ,rig. 17–27. Determine a formula for of :i xwma)*au,-3n /tkrtkd3$V_{BA}\,=\,V_B-V_A$ for points B and A on the line between the charges.
