PASCO EM-8656 AC_DC ELECTRONICS LABORATORY - Manual (Page 18)

14
AC/DC Electronics Laboratory 012-05892A
®
Combination
Discussion
➀ How does the % error compare to the coded tolerance for your resistors?
➁
What is the apparent rule for combining equal resistances in series circuits? In parallel
circuits? Cite evidence from your data to support your conclusions.
➂
What is the apparent rule for combining unequal resistances in series circuits? In parallel
circuits? Cite evidence from your data to support your conclusions.
➃
What is the apparent rule for the total resistance when resistors are added up in series? In
parallel? Cite evidence from your data to support your conclusions.
Extension
Using the same resistance values as you used before plus any wires needed to help build the
circuit, design and test the resistance values for another combination of three resistors. As
instructed, build circuits with four and five resistors, testing the basic concepts you discov-
ered in this lab.
Reference
R
B
R
A
R
A
R
ABC
R
C
R
ABC
=
R
BC
=
R
A
=
➤
➤
➤
➤
➤ R
BC
Figure 4.6
1st Digit
2nd Digit
No. of Zeros
Tolerance
0
1
2
3
4
5
6
7
8
9 Black
Brown
Red
Orange
Yellow
Green
Blue
Violet
Gray
White
None
Silver
Gold
Red
±
20%
±
10%
±
5%
±
2%
Fourth Band
Figure 4.7