The maximum values of the alternating voltages and current are 400 V and 20 A respectively in a circuit connected to 50 Hz supply and these quantities are sinusoidal. The instantaneous values of the voltage and current are 2002 V and 10 A, respectively. At t=0 , both are increasing positively.
(a) Write down the expression for voltage and current at time t .
(b) Determine the power consumed in the circuit.