A straight, cylindrical wire lying along the x axis has a length of 0.854 m and a diameter of 0.78 mm. It is made of a material described by Ohm's law with a resistivity of ρ = 4.68 ✕ 10−8Ω· m. Assume a potential of 4.18 V is maintained at the left end of the wire at x = 0. Also assume V = 0 at x = 0.854 m. Find the current density (in A/m2) in the wire.

A straight, cylindrical wire lying along the x axis has a length of 0.854 m and a diameter of 0.78 mm. It is made of a material described by Ohm's law with a resistivity of ρ = 4.68 ✕ 10−8Ω· m. Assume a potential of 4.18 V is maintained at the left end of the wire at x = 0. Also assume V = 0 at x = 0.854 m. Find the current density (in A/m2) in the wire.

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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