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//===========================================================================
//chapter 10 example 18
clc;clear all;
//variable declaration
V1 = 250; //voltage in V
V2 = 92; //voltage in V
t = 60; //time in seconds
C = 600*10^-12; //capacitance in F
//calculations
//V2 = V1*e^(t/C*R)
R = t/(C*log(V1/V2))
//result
mprintf("insulation resistance = %3.0f M Ω",(R*10^-6));
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