Physics, asked by PreetiGupta2006, 7 months ago

the resistance of hot filament of the bulb is about 10 times the cold resistance. What will be the resistance of 100 W-220 V lamps, when not in use

Answers

Answered by tajindersinghdeol18

7

Explanation:

=V²/P= (200)²/100 =400 ohm

resistance when not in use = 400/10 = 40 ohm

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Answered by Anonymous

0

$\huge\colorbox{blue}{♛ᴀɴsᴡᴇʀ♛࿐}$

Rcold=40010=40Ω :)

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