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+//Example 23.3
+N=200;//Number of loops
+delta_t=15*10^-3;//Time (s)
+r=5*10^-2;//Radius of coil (m)
+A=%pi*r^2;//Area of loop (m^2)
+B=1.25;//Magnetic field strength (T)
+delta_cosTheta=cosd(90)-cosd(0);//Change in value of cos(theta), as theta varies from 0 deg to 90 deg
+delta_phi=A*B*delta_cosTheta;//Change in magnetic flux (T.m^2)
+emf=-N*delta_phi/delta_t;//Induced emf (V)
+printf('Induced emf = %0.1f V',emf)
+//Answer varies due to round off error
+//Openstax - College Physics
+//Download for free at http://cnx.org/content/col11406/latest