Question Checkup 30.3.4: For the two loops in Figs. 30.13 and 30.14, what is the dire......

Physics for Engineers and Scientists Volume 2 [1423312]

For the two loops in Figs. 30.13 and 30.14, what is the direction of the magnetic moment vector?

F30.13

F30.14

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The magnetic moment vector is always perpendicular to the plane of the loop, in the direction given by the right-hand rule: with the fingers wrapped around in the direction of the current, the thumb points upward in Fig. 30.13, and at an angle θ to the right of upward in Fig. 30.14.

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