Question

Ac 220 volt, 2000 watt bulb is connected across 110 volt main supply the power consumed will be

Answer 1

Given

Rated Power of the bulb P = 2000 W

Potential difference V = 110 V

And we know power P = VI

where I = current

I = 2000/220 = 9.09 Ampere.

Now the actual power consumption P = 110 × 9.09 = 1000