Question

Four closed surfaces are shown, each with circular top and bottom faces and curved sides. The areas Atopand Abotof the top and bottom faces and the magnitudes Btopand Bbotof the uniform magnetic fields through the top and bottom faces are given. The fields are perpendicular to the faces and are either inward or outward. Rank the surfaces according to the magnitude of the magnetic flux through the curved sides, least to greatest.

A) 1, 2, 3, 4
B) 3, 4, 1, 2
C) 1, 2, 4, 3
D) 4, 3, 2, 1
E) 2, 1, 4, 3

Answer

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