Question

An electric bulb is rated 220 V and 100 watt it is operated on 110 V the power consumed will be

Answer 1

Answer:

V=220

P=100

P=V × I

100=220×I

I = P ÷ V

100 ÷ 200 = 0.5 Ampere

When V=110 volt

P = V × I

P = 110 × 0.5

P = 55 watt

Answer 2

An electric bulb is rated 220V and 100W. When it is operated on ... 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.