In an experiment the current flowing through a resistor and the potential difference across it is measured.The values are given below.Show that these values confirm ohm's law and find the resistance of resistor

I 1.0 1.5 2.0 2.5 3.0

V 4.0 6.0 8.0 10.0 12

When you draw the graph between V and I, you will find it to be straight as shown in the figure:

As the slope is straight which means that the current is directly proportional to the voltage, this confirms that it follows Ohm's law.

Since the slope of the V-I graph gives the resistance, thus