A light bulb marked "75 W at 120 V" is screwed into a socket at one end of a long extension cord, in which each of the two conductors has resistance 0.800 Q. The other end of the extension cord is plugged into a 120-V outlet. Find the actual power delivered to the light bulb in this circuit.

A light bulb marked "75 W at 120 V" is screwed into a socket at one end of a long extension cord, in which each of the two conductors has resistance 0.800 Q. The other end of the extension cord is plugged into a 120-V outlet. Find the actual power delivered to the light bulb in this circuit.

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter29: Direct Current (dc) Circuits

Section: Chapter Questions

Problem 19PQ

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Question

A light bulb marked "75 W at 120 V" is screwed into a
socket at one end of a long extension cord, in which
each of the two conductors has resistance 0.800 Q. The
other end of the extension cord is plugged into a 120-V
outlet. Find the actual power delivered to the light bulb
in this circuit.

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