The four areas in the figure below are in a magnetic field. The field has a cons

Question

The four areas in the figure below are in a magnetic field. The field has a constant magnitude, but it is directed into the page on the left half of the figure and out of the page in the right half.

the magnitude of the magnetic field in the left half of the figure is increased to three times the magnitude of the field in the right half. Defining out of the page to be the positive direction for magnetic flux, rank the areas based on the net flux, from most positive to most negative. (Use only ">" or "=" symbols. Do not include any parentheses around the letters or symbols.)

Explanation / Answer

If the magnitude of the magnetic field in the left half of the figure is increased to three times the magnitude of the field in the right half,

first calculating the net flux through each area the ranking order from heighest to lowest is circle,rectangle left side, square and rectangle on right side both are same

values are circle 12.56, rectangle left side 6

square 4, rectangle right side 4

Defining out of the page to be the positive direction for magnetic flux, rank the areas based on the net flux, from most positive to most negative

rectangle left side having flux 4 +ve, and square with - 4, rectangle left side with -6, least one is circle with -12.56 Tm2

3 > 1> 4> 2

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