The inner conductor of two coaxial cylindrical conductors carries a charge per unit length +λ C/m, and the outer conductor is grounded.
Given that the electric field between the two conductors is E = (λ/2πεor) rˆ, find an expression for the electric potential difference between the cylinders.

When a lead acid car battery is recharged by the alternator, it acts essentially as an electrolytic cell in which solid lead(ii) sulfate is reduced to lead at the cathode and oxidized to solid lead(ii) oxide at the anode. suppose a current of is fed into a car battery for seconds. calculate the mass of lead deposited on the cathode of the battery.