Above graph shows the data collected by a student who wanted to find the resistance of an unknown resistor. Questions below are based on the graph and his experiment.
a) What is the law he can probably use in the above experiment?
b) State the law you have mentioned in part a).
c) Calculate the unknown resistance by using the above graph.
d) Draw the circuit the student has used. (clearly show the position where he has attached the volt meter (DMM used to measure voltage) and ammeter (DMM used to measure current))