Rank the strength (magnitude) of the magnetic field at the center of the circula

Question

Rank the strength (magnitude) of the magnetic field at the center of the circular loops. Greatest to least. Rank the magnitude of the magnetic flux through the rectangular loops at the position shown (greatest to least). Assume there is interaction between the loops. Six identical rectangular wire loops are moving to the right at the same speed in the vicinity with uniform magnetic fields. The strength of the magnetic fields vary as indicated. All loops contain resistor that is not shown. Rank the magnitude of the voltage across the resistor in the loop at the (Greatest to least).

Explanation / Answer

solving 4th question

magnetic field for coil=uoN*I/2r

so more isN*I/r ration more will be magnetic field

for A,NI/r=15

for B,NI/r=10

for C,NI/r=2.5

for D,NI/r=15/4=3.75

for E,NI/r=20

for F,NI/r=15

order=E>F=A>B>D>C

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