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

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 63P

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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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