What is the electric potential difference
Point A is located 0.75 m away from a charge of -3.90 x 10-9 C. Point B is located 0.35 m away from the charge. What is the electric potential difference VB - VA between these two points?
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Assume that is much larger than the separation d between the charges in the dipole, so that the approximate expression for the electric field along the dipole axis can be used.
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