Resistance 44911

Determine the resistance of a bulb whose wattage at a source voltage of 220 V is 15 W.

Correct answer:

R =  3226.6667 Ω

Step-by-step explanation:

U=220 V P=15 W  P = UI  I=P/U=15/220=4430.0682 A  I = U/R  R=U/I=220/0.0682=3226.6667 Ω



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