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Solution: A system of charges are shown in the figure. What is the ele...

Question

A system of charges are shown in the figure. What is the electric potential energy of the following system of charges?

1. U = kQ2 / ℓ

2. U = 0

3. UkQ/ 3ℓ

4. UkQ/ ℓ2

5. U = - kQ/ 2ℓ

6. U = - kQ/ ℓ

7. U = - kQ/ 3ℓ

8. UkQ2

9. None of these.

10. U = kQ/ 2ℓ