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Electrostatics — quick quiz

5 NSEP-pattern questions on Electrostatics. Instant scoring and solutions, no signup — see where you stand in a few minutes.

Question 1 of 5

Medium

Two identical metallic spheres of radius R are placed such that their centers are separated by distance d (d >> R). One sphere has charge +Q and the other has charge -3Q. They are connected by a thin wire and then disconnected. The force between them after disconnection is: