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

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter21: Current And Direct Current Circuits

Section: Chapter Questions

Problem 8P: A 0.900-V potential difference is maintained across a 1.50-m length of tungsten wire that has a...

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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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