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//===========================================================================
//chapter 10 example 22
clc;
clear all;
//variable declaration
r = 250; //number of scale divisions galvanometer can read
s = 2.5; //universal shunt multiplier
r1 = 350; //number of scale reading
s1 = 1000; //universal shunt multiplier when standard resistor is connecter
S = 1000000;
//calculations
//IR praportional to galvanometer*universal shunt multiplier
IR = r*s; //current through the circuit with unknown resistance Rconnected
Is = r1*s1; //current through the circuit with standard resistance in S
R1 = (Is/IR)*S; //insulation resistance of cable in Ω
//result
mprintf("insulation resistance of cable = %3.2f MΩ",(R1*10^-6));
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