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// Example 2.1
a1=%pi*2^2/4; // Relative area of wire-A
a2=%pi*1/4; // Relative area of wire-B
l1=1; // Relative lenght of wire-B
l2=4; // Relative lenght of wire-B
R1=5; // Resistance of wire
r=(l2/a2)/(l1/a1);
disp('The ratio of resistances (R2/R1) = '+string(r)+' ohm');
R2=r*R1;
disp('Resistance(R2) = '+string(R2)+' ohm');
// p 16 2.1
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