Final answer:
The question is about calculating the resistance of a cylindrical rod, but it does not provide the material's resistivity; hence, the answer is (a) Insufficient information.
Step-by-step explanation:
The student's question pertains to finding the resistance of a cylindrical rod when connected to a power supply. The information provided in the question is not sufficient to calculate resistance because the material of which the rod is made is not mentioned. The resistance for a uniform cylindrical object such as a rod can be found using the formula R = ρL/A, where R is the resistance, ρ is the resistivity of the material, L is the length, and A is the cross-sectional area. The cross-sectional area A can be determined from the diameter (0.550 cm) given, but without knowing the resistivity ρ of the rod's material, we cannot determine the resistance. Therefore, the answer to this question is (a) Insufficient information.
In this case, we need the resistivity of the material the rod is made of and the length and diameter of the rod to calculate its resistance.Without this information, it is not possible to determine the resistance of the rod. Therefore, the correct answer is option a. Insufficient information.