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//To find voltage v and current through 3 ohm resistor using nodal analysis
clc;
clear;
V=poly(0,'V');
Va=8-V;
Vb=-6;
//Resistors in order from the 8V side
R1=1;
R2=2;
R3=3;
R4=4;
// Nodal Analysis
X=((8-Va)/R1)+((Vb-Va)/R3)-((Va-(4*V))/R2); // Characteristic equation to find V
V=roots(X);
Va=8-V;
I=(Vb-Va)/3;
printf('i) The Voltage V (across 1 ohm resistor) is %g V\n',V)
if(imag(sqrt(I))) // Condition to check for negative sign
printf('ii) The Current through 3 ohm resistor is %g A flowing from A to B\n',abs(I))
else
printf('ii) The Current through 3 ohm resistor is %g A flowing from B to A\n',abs(I))
end
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