In an automobile, the system voltage varies from about12 V when the car is off to about 13.8 V when the car is onand the charging system is in operation, a difference of15%. By what percentage does the power delivered to theheadlights vary as the voltage changes from 12 V to 13.8 V?Assume the headlight resistance remains constant.
In an automobile, the system voltage varies from about12 V when the car is off to about 13.8 V when the car is onand the charging system is in operation, a difference of15%. By what percentage does the power delivered to theheadlights vary as the voltage changes from 12 V to 13.8 V?Assume the headlight resistance remains constant.
Glencoe Physics: Principles and Problems, Student Edition
1st Edition
ISBN:9780078807213
Author:Paul W. Zitzewitz
Publisher:Paul W. Zitzewitz
Chapter22: Electric Current
Section22.2: Using Electric Energy
Problem 31PP
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In an automobile, the system voltage varies from about
12 V when the car is off to about 13.8 V when the car is on
and the charging system is in operation, a difference of
15%. By what percentage does the power delivered to the
headlights vary as the voltage changes from 12 V to 13.8 V?
Assume the headlight resistance remains constant.
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