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1. What is the smallest value of resistance that can be used across a 100 Vdc source if the power dissipated is not to exceed 50 W? 2. If the voltage across a resistance is doubled, what will happen to the power absorbed by the resistor? 3. A resistor of 100 Ω has a charge flowing through it at the rate of 300 coulombs per minute. How much power is dissipated?

1. What is the smallest value of resistance that can be used across a 100 Vdc source if the power dissipated is not to exceed 50 W? 2. If the voltage across a resistance is doubled, what will happen to the power absorbed by the resistor? 3. A resistor of 100 Ω has a charge flowing through it at the rate of 300 coulombs per minute. How much power is dissipated?

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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CHECK YOUR UNDERSTANDING
1. What is the smallest value of resistance that can be used across a 100 Vdc source if the
power dissipated is not to exceed 50 W?
2. If the voltage across a resistance is doubled, what will happen to the power absorbed by
the resistor?
3. A resistor of 100 Ω has a charge flowing through it at the rate of 300 coulombs per
minute. How much power is dissipated?
4. A 10-kΩ resistor has a rating of 100 W. What are the maximum current and the
maximum voltage that can be applied to the resistor?
5. A dc motor draws a current of 40A at 220V. If 800 W is dissipated in the form of heat in
the motor, how much power is available for mechanical work?

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