Question

7. A bulb has marked (100W-220v). What is the resistance of filament?
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Answer 1

Answer:

20 v w plz mark me as brainliest

Explanation:

100 w - 220 v = 20vw

Answer 2

Answer:

484 ohm

Explanation:

We know,

P=V^2/R (from Joule's heating law)

therefore,

R=V^2/P

and given Voltage(v) =220v and power(p)=110w

therefore..

R=(220×220)/100

therefore...R=484 ohm.