(a) the battery voltage is 385 v.
(0) state the amount of energy transferred when one coulomb of charge passes through a potential
difference of 385 v.
(ii) show that, when a charge of 18 c passes through the battery, the total amount of energy
transferred to the battery is about 70 mj.
(iii) during the charging process, energy is also transferred to the charging station from the mains
supply.
explain why the amount of energy transferred from the mains supply is more than 70 mj.