A cylindrical resistor of radius 3.9 mm and length 2.0 cm is made of material that has a resistivity of 4.9 x 10-5 2-m. What are (a) the magnitude of the current density and (b) the potential difference when the energy dissipation rate in the resistor is 0.87 W? (a) Number Units (b) Number Units

A cylindrical resistor of radius 3.9 mm and length 2.0 cm is made of material that has a resistivity of 4.9 x 10-5 2-m. What are (a) the magnitude of the current density and (b) the potential difference when the energy dissipation rate in the resistor is 0.87 W? (a) Number Units (b) Number Units

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter9: Current And Resistance

Section: Chapter Questions

Problem 31P: Consider a wire of a circular cross-section with a radius of R = 3.00mm. The magnitude of the...

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Question

A cylindrical resistor of radius 3.9 mm and length 2.0 cm is made of material that has a resistivity of 4.9 x 10-5 2.m. What are (a) the magnitude of the current density and (b) the potential difference when the energy
dissipation rate in the resistor is 0.87 W?
(a) Number
Units
(b) Number
| Units

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