(a) Using Eq. 25.20, determine whether the potential difference between A and B in Figure 25.17 is positive, negative, or zero.

(b) From the directions of the electric force and the force displacement, is the electrostatic work done on a positively charged particle as it is moved along a straight path from A to B positive, negative, or zero? Verify that your answer is consistent with the answer in part \(a\).

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Figure 25.17 Once we know the electrostatic work done by a particle carrying a charge q on a particle carrying a charge q2 as the latter is moved from A to B in Figure 25.15, we can determine the potential difference between A and B in the electric field of particle 1. Potential difference between A and B, VAR V VA, is negative of electrostatic work per unit charge done along a path from A to B. A E