Ohm's Law Experiment #2


The purpose of this experiment is to verify Ohm's Law, and prove that irrespective of the value of the resistance, the relationship between the Voltage and the current will always be linear.


The experiment setup consists of a simple circuit with a variable resistance and a simple power source. The diagram above shows the circuit.

You are encouraged to choose a Voltage range and then vary the value of the resistance over the range. As expected from Ohm's Law, it will be seen that independent of the voltage range and value of the resistance chosen, the relationship between the Voltage and the Resistance is always linear.
V = IR


Ohm's Law deals with the relationship between voltage and current in an ideal conductor. This relationship states that the potential difference (voltage) across an ideal conductor is proportional to the current through it. The constant of proportionality is called the "resistance", R.

Mathematically this law is expressed as:

V = I R


V = Voltage (the potential difference between two points which include a resistance).

I = Current flowing through the resistance.

R = Resistance.