A half-wave rectifier circuit is used to charge a battery

A half-wave rectifier circuit is used to charge a battery

of e.m.f. 12 V and negligible internal resistance. The

sinusoidally varying alternating supply voltage is 24 V

peak. Determine the value of resistance to be connected

in series with the battery to limit the charging

current to 1.0 A. What peak current would flow in

the diode if the battery were reversed?