Voltage - Current Characteristic Curve of a Resistor

Figure 1: Series Circuit

In this lab voltage-current characteristic curve a resistor will determine.
First, 100 ohms is resistance of the resistor that it determine with a ohmmeter. A resistor connect series with a digital ampere meter and a DC power supply. The voltage of power supply will change every time 100 mv and the circuit current will record. According to linear regression technique, slope of line is the resistance.

Ampere (A)	Voltage (v)
0.451	0.1
0.925	0.2
1.398	0.3
2.28	0.4
2.88	0.5
3.62	0.6
4.45	0.7
5.67	0.8
6.6	0.9
7.3	1
8.4	1.1
8.5	1.2
9.2	1.3
10.1	1.4
10.722	1.5
11.7	1.6
12.4	1.7
13	1.8
14.1	1.9
15.1	2

According to the slope of the line, resistance is 0.128 kilo ohm because current measured by millimeter unit.
Percent error = [(128-100) / 128]*100% = 21.9%

Figure 2: Voltage-Current Characteristic Curve