- #1
Asmaa Mohammad
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Homework Statement
A small generator of 5kW, 240V and a constant frequency is used to light up 35 bulbs in parallel, each one has (240 V, 60 W) printed on it. Calculate the resistance of each light bulb.
Homework Equations
The Attempt at a Solution
Attempt 1[/B]
Pw = V²/R ----> R = V²/Pw ------> R = 240²/60 = 960Ω
Attempt 2
i (passing thrrough the circuit) = 5*10³ /240 = 20.83 A
i (passing through each light bulb) = 20.83/35 = 0.6 A
Pw (in each bulb) = i²R -----> R = Pw/i² ----> R = 60/ 0.6² = 166.667Ω
Why do I get different results?
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