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//===========================================================================
//chapter 11 example 2
clc;
clear all;
//variable declaration
R = 10; //resistance of slide wire in Ω
n = 15; //number of steps of dial
r = 10; //resistance of each dial in Ω
I = 0.01; //working current in A
N = 100; //number of divisions of slide
a = 0.2; //each division of slide can read upto a accurately of its span
//calculations
R1 = (n*r)+R; //total resistance of potentiometer in Ω
V = I*R1; //voltage range of the potentiometer V
v = R*I; //voltage drop across slide wire V
x = v/N; //each division represents in V
y = x*a; //resolution of potentiometer in V
//result
mprintf("resolution of potentiometer = %3.4f V",y);
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