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AP Physics C: E&M
9.1 Electric Potential Energy
BeginnerMCQMathematical17.8k
A horizontal axis labeled x with three point charges rendered as small filled circles. The leftmost charge is labeled +Q and is positioned at x = 0. The middle charge is labeled -Q and is positioned at x = d. The rightmost charge is labeled +Q and is positioned at x = 2d. A double-headed horizontal arrow below the x-axis spans from x = 0 to x = d with the label d directly below it. A second double-headed horizontal arrow below the x-axis spans from x = d to x = 2d with the label d directly below it. No other labels, lines, text, or axes appear.
Three point charges aligned on the x-axis.
Three point charges are fixed in a line along the \(x\)-axis as shown. The charges are \(+Q\) at \(x = 0\), \(-Q\) at \(x = d\), and \(+Q\) at \(x = 2d\). What is the total electrostatic potential energy of the three-charge system?

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