CONCEPT: - Ohm's law: At constant temperature, the potential difference across a current carrying wire is directly proportional to current flowing through it. - V=IR Where V is the potential difference, R is resistance and I iscurrent. EXPLANATION: We have graph between Current (I) and potential difference (V): As V=IR So I=V∕R The above relation of I and R is a straight line equation in which 1∕R gives the slope of the line. Slopeof graph =1∕R From the given graph in the question, as slope of graph 1 is maximum and then it is of graph 3 and slope of graph 2 is minimum. ∴ Slope of graph 1> slope of graph 3> slope of graph 2 So 1∕R1>1∕R3>1∕R2 Hence R2>R3>R1