Electric potential and electric potential energy
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Examples
Lessons
- Electric potential energy and electric potential between parallel plates (constant E)
There is a constant electric field of 11 500 N/C between a pair of oppositely-charged parallel plates spaced 0.0475 m apart.- Find the amount of work needed to move a proton from the surface of the negative plate to the surface of the positive plate, and how much electric potential energy the proton has gained after it is moved.
- If a proton is held at the positive plate surface and released, find the speed of the proton when it reaches the surface of the negative plate.
- Find the electric potential difference between the two plates. What potential energy would a charge have at the positive plate surface?
- Electric potential energy and electric potential of a point charge (non-constant E)
Find the electric potential at each point A and B, and the potential difference between A and B. If 0.060 J of work must be done on a charge to move it from A to B, find the magnitude and polarity of the charge.