Let's consider the diagram:
Points 2 and 2' are at equal potential since they lie on an equipotential surface.
The potential difference between two points is given by:
This shows that the potential is increasing.
Two points, point 1 and point 2, are located inside a region with an electric field pointing to the left, as shown in the figure.
Part (a) If a proton is moved from point 1 to point 2, how will the potential energy of the charge-field system change? How will the potential change?
Part (b) If, instead, an electron is moved from point 1 to point 2, how will the potential energy of the charge-field system change? How will the potential change?
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What scientific concept do you need to know in order to solve this problem?
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Based on our data, we think this problem is relevant for Professor Van Hook's class at PSU.