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//===========================================================================
//chapter 6 example 7
clc;clear all;
//variable declaration
B = 0.5; //flux density of the magnetic field in Wb/m**2
N = 100; //number of turns in coil
l = 0.04; //length in m
r =0.03; //width in m
Tc = 120*10^-6; //controlling torque in N-m
v = 1; //volts per division in V
n = 100; //number of division on full-scale
Rm = 0;
//calculations
x =B*N*l*r;
I = Tc/(x); //current for full-scale deflection in A
V = n*v; //full-scale reading of instrument in V
R = (V/(I))-(Rm); //External resistance required to be put in series with the coil in Ω
//result
mprintf("current for full-scale deflection is %3.3f A",I);
mprintf("\nExternal resistance required to be put in series with the coil is %3.2f Ω",R);
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