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//Example 22.6
B=2*5*10^-5;//Magnetic field strength (twice that of Earth's) (T)
r=5*10^-2;//Distance (m)
mu_0=4*%pi*10^-7;//Permeability of free space (T.m/A)
I=2*%pi*r*B/mu_0;//Current (A)
printf('Current in the wire = %0.1f A',I)
//Openstax - College Physics
//Download for free at http://cnx.org/content/col11406/latest
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