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// Example 2.5
// From the diagram 2.14
rp=(1/20)+(1/10)+(1/20); // Parallel resistance
Rp=1/rp; // The resistance Rp
Rs=15; // Series resistance
Rab=Rs+Rp; // Effective resistance between A & B
disp('(a) Effective resistance between A & B for diagram (a) = '+string(Rab)+' Ohms');
// for diagram (b) network above line AB i.e R1=[(R+R)||R]+R
R1=5/3; // Resistance of network
R2=R1; // The lower part is also same as R1
R12=5/6; // Combination of R1 & R2
Rab1=(R12*1)/(R12+1); // Effective resistance between A & B for diagram (b)
disp('(b) Effective resistance between A & B for diagram (b) = '+string(Rab1)+' R');
// for diagram (c)
r1=(3*6)/(3+6); // Parallel combination of 3 & 6 Ohms Resistance
Ri=r1+18; // series of r1 & 18 Ohms Resistance
rab=(20*20)/(20+20); // Parallel combinatuion of Ri & 20 Ohms Resistance
Rab2=rab+5; // series of rab & 2 Ohms Resistance
disp('(c) Effective resistance between A & B for diagram (c) = '+string(Rab2)+' Ohms');
// p 23 2.5
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