A 25-W lightbulb is used in an American desk lamp. (In the United States, standard rms voltage is 120 V.) (a) What is the average power dissipated by the filament? W (b) What is the rms current in the filament? A (c) What is the maximum current in the filament?

A 25-W lightbulb is used in an American desk lamp. (In the United States, standard rms voltage is 120 V.) (a) What is the average power dissipated by the filament? W (b) What is the rms current in the filament? A (c) What is the maximum current in the filament?

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter33: Inductors And Ac Circuits

Section: Chapter Questions

Problem 33PQ

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Question

A 25-W lightbulb is used in an American desk lamp. (In the United States, standard rms voltage is 120 V.)

(a) What is the average power dissipated by the filament?
W
(b) What is the rms current in the filament?
A
(c) What is the maximum current in the filament?
A
(d) What is the maximum power dissipated by the filament?
W

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