Section-E: Subjective Type
In a conducting hollow sphere of inner and outer radii 5 cm and 10 cm respectively, a point charge 1 C is placed at point A, that is 3 cm from the centre C of the hollow sphere. An external uniform electric field of magnitude 20 N/C is also applied. Net electric force on this charge is 15 N, away from the centre of the sphere as shown. Find magnitude of net force (in N) exerted on the charge placed at point A by the induced charges on the sphere.