Consider two neutral concentric conducting thin spherical shells of radii r and 3r. A particle of positive charge Q is fixed at a distance 2r from the common center of the shells. The inner shell can be electrically grounded through a resistance R₂ with the help of another switch S₂ as shown.
H₁ (Total heat) is dissipated in the resistance R₁ after the switch S₁ is closed keeping the switch S₂ open until a steady state is reached:
   
When steady state is reached after closing the switch S₁,the other switch S₂ is closed. Total Heat dissipated after the switch S₂ is closed until a new steady state is reached is H₂.
$(Take\frac{Q^2}{\pi {\epsilon }_{0}r}=108SIunits)$