The maximum values of the alternating voltage and current are and

PHYSICS · Multi-part · CBSE · Physics · Alternating Current · Alternating Current

Problem

The maximum values of the alternating voltage and current are

400\,\text{V}

and

20\,\text{A}

, respectively, in a circuit connected to a

50\,\text{Hz}

supply. These quantities are sinusoidal. The instantaneous voltage and current are

200\sqrt{2}\,\text{V}

and

10\,\text{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.