In the figure, a proton moves a distance $d$ in a uniform electric field $E$ as shown in the figure. Does the electric field do a positive or negative work on the proton? Does the electric potential energy of the proton increase or decrease?
Here, distance increases so, potential energy increases.

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TestHub · Accepted Answer

Force = eE Workdone = force × distance Force and distance are in opposite direction, so work is negative. W = − eE × d Here, distance increases so, potential energy increases.

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