Physics for Scientists and Engineers
10th Edition
ISBN: 9781337553278
Author: Raymond A. Serway, John W. Jewett
Publisher: Cengage Learning
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Question
Chapter 26, Problem 39AP
(a)
To determine
The magnitude and direction of the electric field in the wire.
(b)
To determine
The resistance of the wire.
(c)
To determine
The magnitude and direction of the electric current in the wire.
(d)
To determine
The current density in the wire.
(e)
To determine
To show: The expression for electric field in the wire is given by
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A straight, cylindrical wire lying along the x axis has a length of 0.500 m and a diameter of 0.200 mm. It is made of a material described by Ohm’s law with a resistivity of ρ = 4.00 x 10-8 Ω ⋅ m. Assume a potential of 4.00 V is maintained at the left end of the wire at x = 0. Also assume V = 0 at x = 0.500 m. Find (a) the magnitude and direction of the electric field in the wire, (b) the resistance of the wire, (c) the magnitude and direction of the electric current in the wire, and (d) the current density in the wire. (e) Show that E = ρJ.
A straight, cylindrical wire lying along the x axis has a length of 0.515 m and a diameter of 0.195 mm. It is made of a material described by Ohm's law with a resistivity of ? = 4.00 ✕ 10−8 Ω · m. Assume a potential of 4.00 V is maintained at the left end of the wire at x = 0. Also assume V = 0 at x = 0.515 m.
(a) Find the magnitude (in V/m) and direction of the electric field in the wire.
(b) Find the resistance of the wire (in Ω).
(c) Find the magnitude (in A) and direction of the electric current in the wire.
(d) Find the current density in the wire (in MA/m2).
See image for the full question.
A straight, cylindrical wire lying along the x axis has a length of 0.450 m and a diameter of 0.165 mm. It is made of a material described by Ohm's law with a resistivity of p = 4.00 x 10-8 m. Assume a potential of 4.00 V is maintained at the left end of the wire at
x = 0. Also assume V = 0 at x = 0.450 m.
(a) Find the magnitude (in V/m) and direction of the electric field in the wire.
magnitude
V/m
direction -Select--- ✓
(b) Find the resistance of the wire (in 22).
22
(c) Find the magnitude (in A) and direction of the electric current in the wire.
magnitude
direction ---Select---
(d) Find the current density in the wire (in MA/m²).
MA/m²
(e) Show that E = p. (Submit a file with a maximum size of 1 MB.)
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Chapter 26 Solutions
Physics for Scientists and Engineers
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