Two conducting metal spheres, one originally having a charge of #+2Q# and the other a charge of #-Q#, are briefly touched together, and then separated again. What is the final charge on each sphere?

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Answer 1 · 2017-06-16T12:35:26

There is a net total charge of #Q# (i.e. #2Q-Q#), which will be equally divided between the two spheres, so each will have a charge of #Q/2#.