Determining the resistivity of graphite

In this activity you will use graphite electrodes to try and measure the resistivity of graphite.

You will need

a graphite electrode

multimeter

metal ruler

callipers

Write the relationship for resistance and resistivity

Re-arrange the relationship to make resistivity the subject

What variables do your need to determine resistivity?

What variables will you measure?

Make your measures and calculate the resistivity for graphite.

How does your result compare with others in the class?

How does your result compare with the known resistivity for graphite (you may have to look this up!)