blob: 4348ce6922338f896a99c1fe2d8335fd7548d2a6 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
|
// Ex 17 Page 358
clc;clear;close;
// Given
R=80;//ohm
V=2;//V
l=50;//cm
vd=.1;//V
emf=1.43;//V
Rc=850;//ohm
sg=17.5;//mm/uA
df=1;//mm
I=R/V;//A
Rw=vd/I;//ohm (Resistance of side wire)
Id=df/sg*10**-6;//A (current for 1mm deflection)
el=1/sg*Rc;//uV
printf("The limit of error = %.1f uV",el)
Rw1=0.2/l*Rw;//ohm (for 2cm slide wire)
dV=I*Rw1*1000;//mV (Change in voltage from null point)
r1=emf/I;//ohm (tapped portion)
r2=r1*22.8/R;//ohm
Ig=dV/1000/(Rc+r2);//A
d=dV/1000/(Rc+r2)/Id;//mm
printf("\n Deflection = %.1f mm",d)
|
