r1=400;
r2=2*10^3;
g3=10^(-3);
v=10;
disp("Part a");
g=1/r1+1/r2+g3;
disp("the total conductance (in mS) is"); disp(g*10^3);
disp("Part b");
r=1/g;
disp("the combined resistance (in Ω) is"); disp(r);
disp("Part c");
i=v/r;
disp("the total current drawn (in mA) from the source is"); disp(i*10^3);