Two isolated solid metal spheres are initially far apart

PHYSICS · Subjective · A Level · Physics · Fields and their consequences · Fields and their consequences

Problem

Two isolated solid metal spheres are initially far apart. Sphere A has radius

2.0\,\text{cm}

and carries a charge of

+4.0\,\text{nC}

, while sphere B has radius

6.0\,\text{cm}

and is uncharged. The spheres are briefly touched together and then separated again. Determine the charge that remains on sphere B.