Two Conductors Are Made of the Same Material and Have

question 39

Multiple Choice

Two conductors are made of the same material and have the same length. Conductor A is a solid wire of diameter 1 m. Conductor B is a hollow tube of inside diameter 1 m and outside diameter 2 m. The ratio of their resistance, R_A/R_B, is:

• A) 1
• C) 2
• D) 3
• E) 4

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