Figure 33-74 shows a cylindrical resistor of length l, radius a, and resistivity r, carrying current i.

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(b) Show that the rate P at which energy flows into the resistor through its cylindrical surface, calculated by integrating the Poynting vector over this surface, is equal to the rate at which thermal energy is produced:

Figure 33-74 shows a cylindrical resistor of length l, radius

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Fundamentals of Physics

ISBN: 978-1118230725

10th Extended edition

Authors: Jearl Walker, Halliday Resnick

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Question Posted: May 02, 2016 11:05 AM

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Figure 33-74 shows a cylindrical resistor of length l, radius a, and resistivity r, carrying current i.

Question:

dA FR, dA

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a For the cylindrical resistor shown in Figure 3374 the magnetic field is in the ...View the full answer

Fundamentals of Physics

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