A-level Physics (Advancing Physics)/Electric Potential Energy/Worked Solutions

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k = 8.99 x 109 Nm2C-2

1. Convert 5 x 10-13 J to MeV.

2. Convert 0.9 GeV to J.

3. What is the potential energy of an electron at the negatively charged plate of a uniform electric field when the potential difference between the two plates is 100V?

4. What is the potential energy of a 2C charge 2cm from a 0.5C charge?

Remember, coulombs are big!

5. What is represented by the gradient of a graph of electric potential energy against distance from some charge?

Force exerted on the charge with that energy.