An electric current runs through a wire in the shape of a circle. The direction of the current is counterclockwise, as shown. What is the direction of the magnetic field around the loop of wire?  Provide two solutions: (a) first, a sketch of the magnetic field using an oblique illustration, and (b) a sketch of the magnetic field using a flat, two-dimensional illustration. For solution (b), use conventional symbols used for vectors going out of, and into the page/screen/plane. (Hint: there is a difference between the direction of magnetic field inside the loop and outside the loop.)

Glencoe Physics: Principles and Problems, Student Edition
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ISBN:9780078807213
Author:Paul W. Zitzewitz
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Chapter24: Magnetic Fields
Section: Chapter Questions
Problem 103A
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  1. An electric current runs through a wire in the shape of a circle. The direction of the current is counterclockwise, as shown. What is the direction of the magnetic field around the loop of wire? 



Provide two solutions: (a) first, a sketch of the magnetic field using an oblique illustration, and (b) a sketch of the magnetic field using a flat, two-dimensional illustration. For solution (b), use conventional symbols used for vectors going out of, and into the page/screen/plane. (Hint: there is a difference between the direction of magnetic field inside the loop and outside the loop.)


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