
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN: 9780133923605
Author: Robert L. Boylestad
Publisher: PEARSON
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Transcribed Image Text:A thin conducting wire is bent into the shape shown in the figure. The circular portion of the wire has radius R. The wire is in the plane of the screen and carries a current I.
R
(a) What is the direction of the magnetic field at the center of the loop?
O to the left
O to the right
O upward
O downward
O into the screen
O out of the screen
(b) Find an expression for the magnitude of the magnetic field at the center of the loop. (Use the following as necessary: R, I, and Ho. Do not substitute numerical values; use variables only.)
B =
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