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+//determine the electric field at a point;

+//given

+clc

+Qf=2d-6

+Qt=1d-6

+rf=[1 0 0]//this can also be written as ax

+rt=[0 1 0]//this can also be written as ay

+rtf=rt-rf

+Rtf=norm(rtf)//this is the magnitude of the vector

+atf=rtf/Rtf//the unit vector across the two points p1 and p2

+//the electric field at the point p2 is given by:

+epsilon0=8.85D-12//value may differ, as i have not used the estimated value

+E=((Qf*Qt)/(4*%pi*epsilon0*(Rtf)^2))*atf//electric field calculation

+E=round(E*1d+6)/1d+6///rounding off decimals

+disp(E*1d+3,'the electric field of p2 is:')//mN/C