Question

an electric bulb is rated 220 V and 100 Watts. when it is operated on 110 V, the power consumed will be? Calculate using only this formula P=VI​

Answer 1

Answer:

Hi friend ,

P = V^2/R

If V = 220 V we have

100 W = 220^2/R

R = 220^2/100 Ω = 484 Ω. This is the resistance of the bulb.

When V = 110 V, power consumed = V^2/R = 110^2/484 = 25 W.

So, 25 W power is consumed when it is operated on 110 V.

Explanation:

... MARK ME AS BRAINLIEST...

Answer 2

P = V2/R  

If V = 220 V we have

100 W = 2202/R

R = 2202/100 Ω = 484 Ω. This is the resistance of the bulb.

When V = 110 V, power consumed =  V2/R = 1102 /484 = 25 W.

HOPE YOU UNDERSTOOD