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//===========================================================================
//chapter 10 example 24
clc;
clear all;
//variable declaration
V = 3; //battery voltage in volts
Rm = 2; //meter resistance in Ω
Ifm = 10; //full scale deflection meter current in mA
Rh = 0.5; //half scale deflection resistance in Ω
//calculations
Im = 0.5*Ifm; //half-scale deflection of the movement
Vm = Im*Rm; //voltage across movement in mV
Ix = (Vm*10^-3)/Rh; //current through resistor in A
Ix1 = Ix*10^3; //urrent through resistor in mA
IB = Im+Ix1; //total battery current in mA
V1 = V-(Vm*10^-3); //voltage drop across current lo V
Rse = V1/(IB*10^-3); //current limiting resistor in Ω
//result
mprintf("current limiting resistor = %3.1f Ω",Rse);
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