A solid conductor occupies the cylindrical region p< b, 0 < z< h, where b = 6 mm and h = 20 m. A potential difference of 0.16 Volts between the ends at z = 0 m and z = 20 m drives a steady current in the direction az, and this produces a magnetic field intensity inside the conductor given (in units of A/m?) by Н- Hop'as; Ho = 4 x 105. Hint: read the full question and decide what order to solve the parts in. They don't necessarily have to be solved in order. (a) Find the total resistance between z = 0 and z = h. ANSWER: R = 0 (b) Find a formula involving c for I(c), the current flowing the region where p < c, assuming 0 < c< b. ANSWER: I(c) = A (c) Find a formula involving c for J(c), the current density at any point where p = c, assuming 0 A/m2

A solid conductor occupies the cylindrical region p< b, 0 < z< h, where b = 6 mm and h = 20 m. A potential difference of 0.16 Volts between the ends at z = 0 m and z = 20 m drives a steady current in the direction az, and this produces a magnetic field intensity inside the conductor given (in units of A/m?) by Н- Hop'as; Ho = 4 x 105. Hint: read the full question and decide what order to solve the parts in. They don't necessarily have to be solved in order. (a) Find the total resistance between z = 0 and z = h. ANSWER: R = 0 (b) Find a formula involving c for I(c), the current flowing the region where p < c, assuming 0 < c< b. ANSWER: I(c) = A (c) Find a formula involving c for J(c), the current density at any point where p = c, assuming 0 A/m2

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Concept explainers

Ferromagnetism

Ferromagnetism is a mechanism by which some materials show magnetic properties. Iron and magnetite, an oxide of iron, are two naturally occurring materials that show the property of ferromagnetism. The word ferromagnetism is derived from the Latin name of iron, "Ferrum" as it was the first observed material to show such property. The property of ferromagnetism is shown by only a few substances such as iron, nickel, cobalt, and their alloys. Some transition metals and alloys of rare-earth metals also show ferromagnetism.

Question

A solid conductor occupies the cylindrical region p< b, 0 < z < h, where b = 6 mm and h = 20 m. A potential difference of 0.16 Volts between the
:20 m drives a steady current in the direction az, and this produces a magnetic field intensity inside the conductor given (in units
ends at z =
0 m and z =
of A/m?) by
H = Hop as;
Но — 4 х 105.
%3D
Hint: read the full question and decide what order to solve the parts in. They don't necessarily have to be solved in order.
(a) Find the total resistance between z = 0 and z = h.
ANSWER: R
(b) Find a formula involving c for I(c), the current flowing in the region where p < c, assuming 0 < c< b.
ANSWER: I(c)
A
(c) Find a formula involving c for J(c), the current density at any point where p= c, assuming 0 < c < b. Enter your answer (a vector, of course) in
Cartesian notation, (Jæ, Jy, Jz).
ANSWER: J(c) = <0,0,0>
A/m?
(d) Find a formula involving p for the position-dependent conductivity o(p) inside the conductor. For WeBWorK, type "p" instead of p.
ANSWER: o(p) = 0
S/m

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