Physics

Problem

Two identical isolated metal spheres, A and B, are initially separated by a large distance. Sphere A carries a charge of

+6\,\text{nC}

; the initial charge on sphere B is unknown. The two spheres are temporarily connected with a conducting wire and then separated, after which each sphere has a charge of

+2\,\text{nC}

. What was the initial charge on sphere B? a)

0\,\text{nC}

-4\,\text{nC}

-2\,\text{nC}

+2\,\text{nC}

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