Problem 3.148

An air cylindrical capacitor with a dc voltage $V=200 \mathrm{~V}$ applied across it is being submerged vertically into a vessel filled with water at a velocity $v=5.0 \mathrm{~mm} / \mathrm{s}$. The electrodes of the capacitor are separated by a distance $d=2.0 \mathrm{~mm},$ the mean curvature radius of the electrodes is equal to $r=50 \mathrm{~mm}$. Find the current flowing in this case along lead wires, if $d \ll r$.