There is a potential difference of 1 V between the ends of a 10 cm long graphite rod that has a cross-sectional area of 1 mm2. The resistivity of graphite is 7.5E-6 Ω-m. Let's trace some intermediate quantities before finding the electric field inside the rod

There is a potential difference of 1 V between the ends of a 10 cm long graphite rod that has a cross-sectional area of 1 mm2. The resistivity of graphite is 7.5E-6 Ω-m. Let's trace some intermediate quantities before finding the electric field inside the rod

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter17: Current And Resistance

Section: Chapter Questions

Problem 58AP

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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

There is a potential difference of 1 V between the ends of a 10 cm long graphite rod that has a cross-sectional area of 1 mm². The resistivity of graphite is 7.5E-6 Ω-m. Let's trace some intermediate quantities before finding the electric field inside the rod.

Resistance is .75 ohms and Current is 1.3 Amps

Electric field inside the rod is

Group of answer choices

100 V/m

10 V/m

0.1 V/m

1 V/m

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