Question

Calculate the instantaneous voltage for AC supply of
220 V and 50 Hz.​

Answer 1

Resistance of the resistor, R = 100 Ω

Supply voltage, V = 220 V

Frequency, ν = 50 Hz

(a) The rms value of current in the circuit is given as:

I = V / R

= 220 / 100 = 2.20 A

(b) The net power consumed over a full cycle is given as:

P = VI

= 220 × 2.2 = 484 W