Science, asked by Happylife34, 1 year ago

Friends , plz solve question 7

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Answered by vamritaeunameun
0

Electrical power= 100 W

Potential difference (V) = 220 V

If it will operate at 110 V =?

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.


i hope it will helps you

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