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//To Calculate the Electric Field at a point
//Example 29.1
clear;
clc;
AC=5*10^-2;//The length of AC in metres
PC=12*10^-2;//The length of PC in metres
AP=sqrt(AC^2+PC^2);//Length of AP by Pythagoras Theorem
Theta=acos(AC/AP);//Measure of angle PAC
Q1=10*10^-6;//First Charge in Coloumbs
Q2=-10*10^-6;//Second Charge in Coloumbs
K=9*10^9;//Value of constant (1/(4*pi*ε0))
EA=Q1*K/AP^2;//Electric Field at P due to First Charge
EB=-Q2*K/AP^2;//Electric Field at P due to First Charge
E=(EA+EB)*cos(Theta);//Magnitude of resultant Electric Field
printf("elctric field at point P=%.1f*10^6 N/C",E/10^6);
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