Casio fx-7400G PLUS Booklet page 27

■ Resistor 3 (Violet, Green, Black, Gold)
Voltage (V)
Current (mA)
Analysis – Step 1
Input the data on your graphic calculator and graph it.
Analysis – Step 2
Use the graphic calculator to determine the slope of the line.
a = 13.6
Analysis - Step 3
Determine the resistance value.
R = 74Ω
Other Things To Do 1
After determining the resistance values of all three resistors, check their actual values
using the resistor color code chart below.
Other Things To Do 2
There is some difference between the resistance values calculated in the experiment
and actual resistance values. What is the reason for this difference?
0 0.2 0.4 0.6
0 2.8 5.6 8.3
10
–3
Resistor Color Code Chart
Color Value
Black 0
Brown 1
Red 2
Orange
3
Yellow
4
Green
5
Blue 6
Violet 7
Gray
8
White 9
Silver
—
Gold
None
—
0.8 1.0 1.2 1.4
11.1 13.8 16.5 19.2 21.8 24.5 27.3
Multiplier Tolerance (%)
1 —
10
±1
2
10
±2
3
10
—
4
10
5
10 ±0.5
6
10 ±0.25
7
10 ±0.1
8
10
—
9
10
–2
10 ±10
–1
10 ±5
— ±20
– 24 –
EE-2 Ohm's Law
1.6 1.8 2.0