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A rectangular, a square, a circular and an elliptica loop, all in the (x -y) plane, are moving out of a uniform magnetic field with a constant velocity, `vecV = vhat i` The magnetic field is directed along the negative z axis direction. The induced emf. during the passage of these loops, out of the field region, will not reman constant for:

A

the circular and the elliptical loops

B

only the elliptical loop

C

any of the four loops

D

the rectangular, circular and elliptical loops

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