Question

According to Ohm’s Law in electricity, the voltage (V ) across a resistor with a resistance...

According to Ohm’s Law in electricity, the voltage (V ) across a resistor with a resistance (R ) is directly proportional to the current (I) passes through the resistor. Accordingly

V= IR

Data listed in the following table is the results of an experiment measuring the voltage across a resistor R vesrus the current it passes through it. Use the least square linear fitting to find the resistance R.

Voltage (V)

Current, I (mA)

0.5

2.3

1

5.2

1.5

7.0

2

10.5

2.5

12.6

3

15.1

4

19.8

5

25.0

5.5

27.0

7

35.5
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