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Solved: In an automobile, the system voltage varies from
Chapter 16, Problem 78GP(choose chapter or problem)
Problem 78GP
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.
Questions & Answers
QUESTION:
Problem 78GP
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.
ANSWER:
Step-by-step solution
Step 1 of 2
The system voltage when the car is off:, the system voltage when the car is on:
The power output when the car is off and on:
R is the resistance of the head lights.