Problem4. Resistors are given a power rating. For example, resistors are available with ratings of 1/8 W, 1/4 W, 1/2 W, and 1 W. A 1/2-W resistor is able to safely dissipate 1/2 W of power, indefinitely. Resistors with larger power ratings are more expensive and bulkier than resistors with lower power ratings. Good engineering practice requires that resistor power ratings be specified to be as large as, but not larger than, necessary. The value of the current source current is i, = 30 mA R₁ Consider the circuit shown in Figure to the right. The values of the resistances are R₁ =100022, R₂ = 20002, and R₂ = 40002 Specify the power rating for each resistor. R3 R2 wwwwwwww i, = is

Problem4. Resistors are given a power rating. For example, resistors are available with ratings of 1/8 W, 1/4 W, 1/2 W, and 1 W. A 1/2-W resistor is able to safely dissipate 1/2 W of power, indefinitely. Resistors with larger power ratings are more expensive and bulkier than resistors with lower power ratings. Good engineering practice requires that resistor power ratings be specified to be as large as, but not larger than, necessary. The value of the current source current is i, = 30 mA R₁ Consider the circuit shown in Figure to the right. The values of the resistances are R₁ =100022, R₂ = 20002, and R₂ = 40002 Specify the power rating for each resistor. R3 R2 wwwwwwww i, = is

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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Question

Problem4.
Resistors are given a power rating. For
example, resistors are available with
ratings of 1/8 W, 1/4 W, 1/2 W, and 1 W.
A 1/2-W resistor is able to safely dissipate
1/2 W of power, indefinitely. Resistors
with larger power ratings are more
expensive and bulkier than resistors with
lower power ratings. Good engineering
practice requires that resistor power
ratings be specified to be as large as, but
not larger than, necessary.
The value of the current source current is
i = 30 mA
Specify the power rating for each resistor.
R1
R₂
www
ir = is
Consider the circuit shown in Figure to the right. The values of the resistances are
R₁ =100022, R₂ = 2000, and R₂ = 4000
R3
is

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