Question

Aconducting sphere of radius 10 /cm has an unknown charge.if the electric fild 15 /cm from the center of the sphere has the magnitude 3.0*10000 N/C andisdirected radially inward ,what is the net charge on thesphere?

Answer 1

A field, creating by sphere out of sphere, is equivalent to a point charge field, therefore electric field strength respectively the sphere charge or (nC), and the charge is negative, in accordance with the electric field strength direction.


The answer:
Net charge on the sphere = - 75 nC.