Verification of Ohm's Law

Goal: 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.

Setup: The experiment setup consists of a simple circuit with a variable resistance and a simple emf (electro motive force) source.

Background: This experiment will help you in understanding the basic concept which led to Ohm's Law. Voltage and current in any conductor is independent of the resistance of the conductor. The adjoining diagram shows a very simple set up of a circuit. The circuit has a single voltage source and a single variable resistor.

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. This verifies the law:  

                                                                                                         V = IR



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