Question

    Two wires A and B are made of the same material and have

    the same length but different cross-sectional areas. If the resistance of wire A is 9 times the resistance of wire B, the ratio of the radius of wire A to that of wire B is:
    A 3:1 Correct Answer Incorrect Answer
    B 1:9 Correct Answer Incorrect Answer
    C 1:3 Correct Answer Incorrect Answer
    D 9:1 Correct Answer Incorrect Answer

    Solution

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