CH. 30/31: Current and ResistanceA rod of 2.0-m length and a square (2.0 mm × 2.0 mm) cross section is made of a materialwith a resistivity of 6.0 x 10°Q·m. If a potential difference of 0.50 V is placed across the1.ends of the rod, at what rate is heat generated in the rod? ANS = 8.3 W

Given data: Length (L) = 2.0 m Cross section area (A) = 2.0 mm × 2.0 mm Resistivity (ρ) = 6.0×10-8…

A rod of 2.0-m length and a square (2.0 mm × 2.0 mm) cross section is made of a material with a resistivity of 6.0 × 10° N m. If a potential difference of 0.50 V is placed across the ends of the rod, at what rate is heat generated in the rod? ANS = 8.3 W %3D

A rod of 2.0-m length and a square (2.0 mm × 2.0 mm) cross section is made of a material with a resistivity of 6.0 × 10° N m. If a potential difference of 0.50 V is placed across the ends of the rod, at what rate is heat generated in the rod? ANS = 8.3 W %3D

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 65PQ

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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

CH. 30/31: Current and Resistance
A rod of 2.0-m length and a square (2.0 mm × 2.0 mm) cross section is made of a material
with a resistivity of 6.0 x 10°Q·m. If a potential difference of 0.50 V is placed across the
1.
ends of the rod, at what rate is heat generated in the rod? ANS = 8.3 W

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