Point charges q and Q are positioned as shown. If q = +2.0 nC, Q = ?2.0 nC, a = 3.0 m, and b = 4.0 m, what is the electric potential difference, VA ? VB?
a.
8.4 V
b.
6.0 V
c.
7.2 V
d.
4.8 V
e.
0 V
d
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