A wire of length L and of circular cross section of radius r has a resistance of R ohms. Another wire of same material and of cross- sectional radius 2r will have the same resistance R if the * length is

A wire of length L and of circular cross section of radius r has a resistance of R ohms. Another wire of same material and of cross- sectional radius 2r will have the same resistance R if the * length 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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Concept explainers

Electrical Heating Unit

The conversion of electrical energy to heat energy is known as electric heating. The heating system that converts the electrical energy to heat energy for various application is called electrical heating unit. Electricity is employed as the firing mechanism in electric heating systems, which transforms electric current to heat. Electric heaters have heating elements in the form of electric resistors.

Question

A wire of length L and of
circular cross section of
radius r has a resistance of R
ohms. Another wire of same
material and of cross-
sectional radius 2r will have
the same resistance R if the
* length is
2L O
L/2 O
4L O
L/4 O

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