An electric bulb is rated 220v and 100w. what is the power consumed when it is operated on 100v and 10v
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Given : P=100W and V=220v
P=V²/R
100=(220)²/R
R=(220*220)/100
R=484 ohm
when the bulb is operated at 100v
P=V²/R
=(100*100)/484
=20.66 watt
when the bulb is operated at 10v
P=V²/R
=100/484
=0.2 watt
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P=V²/R
100=(220)²/R
R=(220*220)/100
R=484 ohm
when the bulb is operated at 100v
P=V²/R
=(100*100)/484
=20.66 watt
when the bulb is operated at 10v
P=V²/R
=100/484
=0.2 watt
If this answer is helpful to you then please mark the answer as the brainliest.
[Thank you]
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