Objectives of Report
To prove the theoretical results of Ohm’s Law and verify them from practical results using 1k ohm Resistor.
- 1k Resistor
- DC Power Supply (Variable)
- Connecting wires
- Resistor Colour Coding Chart
Setup the circuit diagram as shown in figure:
- Set the initial voltage to 1V and measure the current flowing through the circuit.
- Now increase the voltage to 2V and again measure the current
- Repeat the above steps for 3, 4, 5 … 10 V respectively and note all your readings in the Observations table.
Observations table [Practical]
The observations table for my experiment is:
Your readings will, of course, be different from mine, but they should closely match these values.
Original: V = IR,
In our experiment: I = V/R
On the other hand, the theoretical calculations for the experiment calculated through Ohm’s Calculator are:
Graphing the Values
By plotting voltage on the x-axis and taking current on the y-axis you will achieve these results:
Here the orange line represents theoretical values and the blue line represents the practical values. After observing these values from Experiment report one can understand that there is little to no difference between both these values.
The experimental results in our laboratory closely matched the theoretical results of law. We learnt that for a linear component like resistor the statement ‘Voltage is directly proportional to the current’ is perfectly correct.