1.

Two small spheres each carrying a charge q are placedmetre apart. If one of the sphere is taken around the otherone in a circular path of radius r, the work done will beequal to[MP PET 1995: MNR 1998; Pb. PMT 2000;

Answer»

work done is zero, as a circular path around a small positively charged sphere is its equipotential surface and work done on carrying a charge through a equipotential surface is zero



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