College Physics
College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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I JUST NEED RBULB2

THE ONE MARKED WRONG

The figure below shows three lightbulbs connected to a 120-V AC (rms) household supply voltage. Bulbs 1 and 2 have a power rating of 45 W, and bulb 3 has a 75-W rating.
120 V
(a) Find the rms current in each bulb.
Ibulb
.375
A
%D
1
I ulb
.375
A
2
Ibulb
.625
A
(b) Find the resistance of each bulb.
Rpulb 1
= 320
Ω
= 192
Rpulb 2
Your response differs from the correct answer by more than 10%. Double check your calculations. 2
Rpulb 3
192
%3D
(c) What is the total resistance of the combination of the three lightbulbs?
87.27
Ω
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Transcribed Image Text:The figure below shows three lightbulbs connected to a 120-V AC (rms) household supply voltage. Bulbs 1 and 2 have a power rating of 45 W, and bulb 3 has a 75-W rating. 120 V (a) Find the rms current in each bulb. Ibulb .375 A %D 1 I ulb .375 A 2 Ibulb .625 A (b) Find the resistance of each bulb. Rpulb 1 = 320 Ω = 192 Rpulb 2 Your response differs from the correct answer by more than 10%. Double check your calculations. 2 Rpulb 3 192 %3D (c) What is the total resistance of the combination of the three lightbulbs? 87.27 Ω
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