Two Pieces of Copper Wire Have the Same Length,but Wire

question 72

Multiple Choice

Two pieces of copper wire have the same length,but wire A has a square cross section of width s whereas wire B has a circular cross section of diameter s.Which of the following statements is true?

• A)The resistance of both wires is the same.
• B)The resistivity of both wires is the same.
• C)Both the resistance and the resistivity of A and B are the same.
• D)The resistance of A is greater than that of B.
• E)The resistivity of A is greater than that of B.

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