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# HW15Sol - Jim Guinns PHYS2212 Assignment#15 1 Consider the...

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Jim Guinn’s PHYS2212 Assignment #15 1. Consider the magnetic field and loop shown. (Hint: Remember Lenz's Law.) What is the direction of the induced magnetic field and the induced current if a) the magnitude of the magnetic field increases, or If the external field, which is pointing into the page, increases, the induced field will try to decrease this change, so the induced field will point out of the page. To determine the induced current we use the right-hand-rule, point your thumb along the induced field, out of the page, your fingers curl along the induced current, that is, the induced current is counterclockwise. b) the magnitude of the magnetic field decreases. If the external field, which is pointing into the page, decreases, the induced field will try to decrease this change, so the induced field will point into the page. To determine the induced current we use the right-hand-rule, point your thumb along the induced field, into the page, your fingers curl along the induced current, that is, the induced current is clockwise.

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