Three copper wires are connected to form thetriangle shown. Each wire has diameter 2.0mmand resistivity 1.7 × 10-8 Q:m. What resistanceis measured by an ohmmeter that is connectedat points A and B?25cm20cmВC15cmA

Three copper wires are connected to form the triangle shown. Each wire has diameter 2.0mm and resistivity 1.7 × 10-8 2-m. What resistance is measured by an ohmmeter that is connected at points A and B? 25cm 20cm В 15cm

Three copper wires are connected to form the triangle shown. Each wire has diameter 2.0mm and resistivity 1.7 × 10-8 2-m. What resistance is measured by an ohmmeter that is connected at points A and B? 25cm 20cm В 15cm

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter28: Current And Resistance

Section: Chapter Questions

Problem 67PQ

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Concept explainers

Resistivity

Resistivity is a characteristic property of the conductor’s material that measures the extent to which the material opposes the flow of current. It is denoted by the Greek letter “rho”. Electrical resistivity, also known as specific resistance, depends on the nature of the material of the conductor and is unaffected by its dimensions.

Question

Three copper wires are connected to form the
triangle shown. Each wire has diameter 2.0mm
and resistivity 1.7 × 10-8 Q:m. What resistance
is measured by an ohmmeter that is connected
at points A and B?
25cm
20cm
В
C
15cm
A

Expert Solution

Step 1

Diameter of each wire is 2.0mm

Resistivity of each wire is 1.7×10^-8Ohm.m

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