Considerable scientific work is currently under way to determine whether weak os

Question

Considerable scientific work is currently under way to determine whether weak oscillating magnetic fields such as those found near outdoor electric power lines can affect human health. One study indicated that a magnetic field of magnitude 1.0 multiplied by 10-3 T, oscillating at 60 Hz, might stimulate red blood cells to become cancerous. If the diameter of a red blood cell is 8.3 mu m, determine the maximum emf that can be generated around the perimeter of the cell if the magnetic field strength is 1.10 10-3 T.

Explanation / Answer

from Farade's law, E=N*d(magnetic flux)/dt

for max E,Flux=B*(pi*r^2)=1.1*10^(-3)*pi*(8.3*10^(-6) / 2)^2=.06*10^(-12)

t=1,N=1

so E=.06 * 10^(-12) V

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