Question

an electric bulb is rated 220 volt and 100 watt when it is operated on 110v the power consumed will be​

Answer 1

Answer:

use p=v^2/r find resistence from here and again put the value of r in the formula u will get the answer

Explanation:

100=220.220/r       ⇒r=22.22=484     ⇒p=110×110÷484≈25