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An equipotential plot is shown in the animation (position is given in meters and electric potential is given in volts). The electric potential is shown next to the electron. You can drag the red electron with the mouse. How much work must an external force do in order to move the red electron from [x, y] = [1.1m, -1.5 m] to [x, y] = [-1.6 m, 1.2 m]? Restart.

Problem authored by Mario Belloni and Wolfgang Christian and modified by Melissa Dancy.