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clc;
r=0.05; // in m
eo=8.85*10^-12; //constant
q=10^-9; //charge at point P in Coulomb
E=q/(4*(%pi)*eo*(r^2)); //calculating electric field
disp(E,"Electric field in v/m = "); //displaying result
r1=0.2; //in m
V1=q/(4*(%pi)*eo*r1); //calculating potential difference
disp(V1," Potential difference between two points in Volt = "); //displaying result
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