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Statement of a problem № 10123

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(a) As the solid metal disk in Figure 23-37 swings to the right, from the region with no field into the region with a finite magnetic field, is the induced current in the disk clockwise, counterclockwise, or zero? (b) Choose the best explanation from among the following: I. The induced current is clockwise, since this produces a field within the disk in the same direction as the magnetic field that produced the current. II. The induced current is counterclockwise to generate a field within the disk that points out of the page. III. The induced current is zero because the disk enters a region where the magnetic field is uniform.




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