diid an UnknoWn resIstance to verify it. (a) Name and state the law which relates the potential difference and current in a conductor. (b) What is the necessary condition for a conductor to obey the law named above in part (a) ? (a) Draw a V-I graph for a conductor obeying Ohm's law. (b) What does the slope of V-I graph for a Ans. (b) resistance conductor renresent ?