Eight identical rectangular wire loops are moving to the right in the vicinity o

Question

Eight identical rectangular wire loops are moving to the right in the vicinity of a region in which there is a uniform magnetic field coming out of the page. The rectangular loops are being pushed to the right all at the same constant speed. The loops have various portions (25%, 50%, 75%, or 100%) within the field as shown.

Rank the magnitude of the rate of change of magnetic flux through the rectangular loops at the positions shown. Assume there is no interaction between the loops.

10. (4 points) Eight identical rectangular wire loops are moving to the right in the vicinity of a region in which there is a uniform magnetic field coming out of the page. The rectangular loops are being pushed to the right all at the same constant speed. The loops have various portions (25%, 50%, 75%, or 100%) within the field as shown. Rank the magnitude of the rate of change of magnetic flux through the rectangular loops at the positions shown. Assume there is no interaction between the loops. Foc O O O O Bao 0 0 0 A 0 0 0 B . O oo eo P OP F9 o o bob ÞEO o op to o o o o o o o 'F Logo + To be O O O ojo 0 0 0 0 0 All loops moving to the right Greatest 1-2345678 Least Greatest 1 5 Least

Explanation / Answer

Rate of change of flux physically indicates the amount of magnetic field lines changing through a particular cross section.

There is no change in magnetic fields happening on B, ,H, D,E so there net rate of change of flux is zero

F has the greatest area swiped so it should have maximum flux

Then A,C,G all have same area so they have same flux

F>A=C=G>D=B=E=H

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