8 . A rectangular loop of wire is moving toward the bottom of the page with a sp

Question

8. A rectangular loop of wire is moving toward the bottom of the page with a speed of 0.019 m/s (see the drawing). The loop is leaving a region in which a 2.4 T magnetic field exists; the magnetic field outside this region is zero. During a time of 2.0 s, what is the magnitude of the change in the magnetic flux?   Wb (Answer is not 0.073)

8. A rectangular loop of wire is moving toward the bottom of the page with a speed of 0.019 m/s (see the drawing). The loop is leaving a region in which a 2.4 T magnetic field exists; the magnetic field outside this region is zero. During a time of 2.0 s, what is the magnitude of the change in the magnetic flux? Wb (Answer is not 0.073)

Explanation / Answer

the change in magnetic flux is

?? = B?A cos?

        = 2.4 T ( 0.019 m/s ) ( 0.080m) ( 2.0s) cos0

        = 7.296 * 10-3 Wb

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