– 23 –
Experiment 2
Referring to Experiment 1, determine unknown resistance values. We will use three resistors,
each of which has four colored bands.
■ Resistor 1 (Brown, Green, Brown, Gold)
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 = 6.81 10
–3
Analysis – Step 3
Determine the resistance value.
R = 147Ω
■ Resistor 2 (Yellow, Violet, Brown, Gold)
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 = 2.16 10
–3
Analysis – Step 3
Determine the resistance value.
R = 463Ω
Voltage (V) 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
Current (mA) 0 1.4 2.7 4.1 5.5 6.8 8.2 9.6 10.9 12.3 13.6
Voltage (V) 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
Current (mA) 0 0.43 0.86 1.3 1.7 2.2 2.6 3.0 3.5 3.9 4.3
EE-2 Ohm’s Law
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