Figure 33-74 shows a cylindrical resistor of length l, radius a, and resistivity r, carrying current i.
Question:
(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:
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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
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Related Book For
Fundamentals of Physics
ISBN: 978-1118230725
10th Extended edition
Authors: Jearl Walker, Halliday Resnick
Question Posted:
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