Question

Figure shows a point charge +Q, located at a distance R/2 from the centre of a
spherical metal shell. Draw the electric field lines for the given system. plz explain how?

Answer 1

In the static condition, there is no electric field and no net charge at any point inside a conductor. The charge must appear at the surface of the conductor. Potential [math]V[/math] at the centre or any point inside it is same and its value is that at its surface (a conductor is an equipotential volume). Hence

[math]\displaystyle V = \frac 1{4\pi\epsilon_o}\frac qR[/math