Carbon Hollow +T 12T 121 2a 2b F TI Figure P2.4: Carbon resistor for Problem 2.4.

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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A resistor of length l consists of a hollow cylinder of
radius a surrounded by a layer of carbon that extends from
r = a to r = b, as shown in Fig. P2.4.
(a) Develop an expression for the resistance R.
(b) Calculate R at 20 ◦C for a = 2 cm, b = 3 cm and
l = 10 cm.

Carbon
Hollow
IT
2a 2b
TI
Figure P2.4: Carbon resistor for Problem 2.4.
Transcribed Image Text:Carbon Hollow IT 2a 2b TI Figure P2.4: Carbon resistor for Problem 2.4.
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