PhysicsNEET 2021Conductors and dielectrics

Electrostatic Potential and Capacitance

Two charged spherical conductors of radius $R_{1}$ and $R_{2}$ are connected by a wire. Then the ratio of surface charge densities of the spheres ( $σ_{1} / σ_{2}$ ) is:

A. $\frac{R _{1}}{R _{2}}$
B. $\frac{R _{2}}{R _{1}}$ ✓
C. $\frac{R _{1}}{R _{2}}$
D. $\frac{R _{1}^{2}}{R _{2}^{2}}$

You have the answer. The worked solution — and why the other three were written — is part of a paid pack.

Electrostatic Potential and Capacitance

More from this chapter in past papers