What is the current in each bulb?

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Two 40-watt bulbs connected in parallel to a 120-volt circuit each draw a current of 1/3 Amp. The total power for both bulbs is 80 watts, leading to a total current of 2/3 Amp. The calculation of resistance is unnecessary for determining the current through each bulb. The correct approach involves using the power formula P = VI, which simplifies the calculation. Therefore, each bulb operates at 1/3 Amp in this setup.
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Two 40-watt bulbs are connected in parallel to a 120-volt circuit. What is the current in each bulb?
Choose one answer.
a. 1/4 A
b. 1/3 A
c. 1/2 A
d. 2 A
e. 3 A

I used V = IR and P = V^2/R

My attempt
40 W = 120V^2 / R giving R = 360
1/R + 1/R = 1/Req => 1/360 + 1/360 = 1/Req => Req = 180ohms
V=IR => 120 = 180I => I = 2/3
which is not an answer
 
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You found the total current (correctly), but the question asks for the current through each bulb.
 


You don't need to calculate resistance here, assume the total current is I , then I= \frac{80w}{120V}=\frac{2}{3} Amp, the current in each bulb should be \frac{1}{3} Amp
 
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