Question

How much electric current will an electric iron draw from 220 V source if the resistance of its heating element when hot, is 55 Ω? Calculate the power consumed by the electric iron when it is operated at 220 V.

Answer 1

Given: Voltage (V) = 220 V

Resistance (R) = 55 Ω

Using Ohm’s Law:

I = `V/R`

= `220/55`

= 4 A

Power consumed (P) = VI

= 220 × 4

= 880 V