The small currents in axons corresponding to nerve impulses produce measurable magnetic fields. a typical axon carries a peak current of 0.040 ? a. what is the strength of the field at a distance of 1.6 mm ?

Explanation:

We can think the axons as current-carrying wires

The strength of the magnetic field produced by a current-carrying wire is

where

is the vacuum permeability

I is the current

r is the distance from the wire

In this problem we have

r = 1.6 mm = 0.0016 m

So the strength of the magnetic field is