A square, conducting wire loop sits in a plane perpendicular to a spatially unif

Question

A square, conducting wire loop sits in a plane perpendicular to a spatially uniform magnetic field pointing into the plane of the page as shown. The magnetic field strength steadily increases with time. Which one of the following effects best describes the result of this field increase?

a - The entire loop moves up the plane of the page.

b - The loop rotates with the top edge of the loop initially moving out of the plane of the page and the bottom edge moving into the plane of the page.    

c - The loop rotates with the top edge of the loop initially moving into the plane of the page and the bottom edge moving out of the plane of the page.

d - The legs of the loop attempt to increase the area enclosed by the loop.

e - The legs of the loop attempt to decrease the area enclosed by the loop.

please explain your answer

Explanation / Answer

e - The legs of the loop attempt to decrease the area enclosed by the loop.

as the magnetic field increases, magetic flux through the loop increases. the loop opposes the increase in flux through it.so, it tries to decreas the area of the loop.

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