(I) How much work does the electric field do in moving a proton from a point with a potential of $+125 \mathrm{V}$ to a point where it is $-55 \mathrm{V}$ ? Express your answer both in joules and electron volts.
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6 x 10^-19 C), Vf is the final potential (-55 V), and Vi is the initial potential (+125 V). Show more…
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(I) How much work does the electric field do in moving a proton from a point at a potential $+$125V of to a point at $-$45 V? Express your answer both in joules and electron volts.
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Two very large charged parallel metal plates are 10.0 $\mathrm{cm}$ apart and produce a uniform electric field of $2.80 \times 10^{6} \mathrm{N} / \mathrm{C}$ between them. A proton is fired perpendicular to these plates with an initial speed of 5.20 $\mathrm{km} / \mathrm{s}$ , starting at the middle of the negative plate and going toward the positive plate. How much work has the electric field done on this proton by the time it reaches the positive plate?
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