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An isolated conducting sphere with a radius $r$ is charged to $+Q,$ then a second conducting sphere, with a radius $r/2$ is attached to it with a wire. The spheres are much further apart than their radius.

Which is true about after they are combined for a few seconds?

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The spheres each have the same amount of charge $+Q$.


One sphere has a charge of $+Q$ the other has a charge of $–Q$.


Both spheres have the same electric field coming off of it.


Both spheres are at the same potential.


Both spheres have a charge of $-Q$.

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