Wednesday, March 2, 2011

What is the potential difference?

Three point charges are on the x axis: q1 = +2 m at x = 0, q2 = +2 mC at x = 3 m and q3 = -4 mC at x = 6 m. What is the potential difference between the points A(0,2) and B(0,4) on the y-axis?

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