A long solenoid that has n = 65 turns per unit length carries a current that increases linearly with time (see figure). The solenoid has radius R = 0.22 [m], length L = 5 [m] and the current in the windings is given by I = at, where t denotes time in [s], and a = 0.89 [A/s] is the increase in current per unit time. Constants: Ho = 1.35 x 10-6 H/m Solenoid = at, L R What is the magnitude of the Poynting vector Š in [µW/m²] at r = R and t = 2 [s] (just inside the solenoid windings)?

A long solenoid that has n = 65 turns per unit length carries a current that increases linearly with time (see figure). The solenoid has radius R = 0.22 [m], length L = 5 [m] and the current in the windings is given by I = at, where t denotes time in [s], and a = 0.89 [A/s] is the increase in current per unit time. Constants: Ho = 1.35 x 10-6 H/m Solenoid = at, L R What is the magnitude of the Poynting vector Š in [µW/m²] at r = R and t = 2 [s] (just inside the solenoid windings)?

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 long solenoid that has n = 65 turns per unit length carries a current that increases linearly with time (see
figure). The solenoid has radius R = 0.22 [m], length L = 5
[m] and the current in the windings is given by
I = at, wheret denotes time in [s], and a = 0.89 [A/s] is the increase in current per unit time.
Constants:
Ho = 1.35
x 10-6 H/m
Solenoid
|= at
L
R
What is the magnitude of the Poynting vector S in [µW/m?] at r = R and t = 2 [s] (just inside the
solenoid windings)?

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