PASCO EM-8656 AC_DC ELECTRONICS LABORATORY User Manual
Page 14
10
AC/DC Electronics Laboratory
012-05892A
®
Data Processing
➀
Construct a graph of Current (vertical axis) vs Resistance.
➁
For each of your sets of data, calculate the ratio of Voltage/Resistance. Compare the values
you calculate with the measured values of the current.
Discussion
➀
From your graph, what is the mathematical relationship between Current and Resistance?
➁
Ohm’s Law states that current is given by the ratio of voltage/resistance. Does your data
concur with this?
➂
What were possible sources of experimental error in this lab? Would you expect each to
make your results larger or to make them smaller?
Reference
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
Resistance,
Ω
Current, amp
Voltage, volt
Voltage/Resistance
Table 3.1
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