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? CHECK YOUR UNDERSTANDING1. What is the smallest value of resistance that can be used across a 100 Vdc source if thepower dissipated is not to exceed 50 W?2. If the voltage across a resistance is doubled, what will happen to the power absorbed bythe resistor?3. A resistor of 100 Q has a charge flowing through it at the rate of 300 coulombsminute. How much power is dissipated?per4. A 10-k2 resistor has a rating of 100 W. What are the maximum current and themaximum 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 inthe motor, how much power is available for mechanical work?

power dissipation= V2R≤50w (100)2R≤50 wR≥(100)250R≥200i.e Smallest value of R = 200Ω(2) Relation…

Answered: 1. What is the smallest value of…

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

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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?

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?

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 Q has a charge flowing through it at the rate of 300 coulombs
minute. How much power is dissipated?
per
4. A 10-k2 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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