Current and magnetic field of the axon Small currents originating from nerve imp

Question

Current and magnetic field of the axon Small currents originating from nerve impulses in axons produce small magnetic fields that can be measured. What would be the peak current carried by the axon, if the strength of the magnetic field at a distance of 0.6 cm from the axon is 7.3 Times 10^-14 T? 0.66 mA 3.5 Times 10^-21 A 0.7 nA 2.2 nA None of the Above What would be the value of the magnetic field at a distance of 7 mm from the axon 6.3 Times 10^-14 T 2.2 Times 10^-8 T 2.0 Times 10^-14T 7.3 Times 10^-14 T None of the Above

Explanation / Answer

B = uo*I/2pi*d

I = B*2pi*d/uo

I = 7.3 x 10^-14 * 0.6 x 10^-2 / 2 x 10^-7

I = 2.19 nA = 2.2 nA ( D option )

part 10 )

B = uo*I/2pi*d

d = 7mm = 7 x 10^-3 m

B = 6.3 x 10^-14 T

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