//To Calculate Magnetic Field due to a 1cm piece of Wire //Example 35.1 clear; clc; i=10;//Current in the Wire in Amperes dl=10^-2;//Length of the wire in metres r=2;//Distance of point P from wire in metres theta=%pi/4;//Angle made by point P with the wire k=1*10^-7;//Constant (u0/(4*pi)) dB=(k*i*dl*sin(theta))/r^2;//Formula for finding the magnetic field printf("Magnetic Field due to a piece of Wire = %.1f*10^-9 T",dB*10^9);