A Cylindrical Wire Has a Resistance R and Resistivity ρ

question 31

Multiple Choice

A cylindrical wire has a resistance R and resistivity ρ.If its length and diameter are BOTH cut in half
-what will be its resistivity?

• A)4ρ
• B)2ρ
• C)ρ
• D)ρ/2
• E)ρ/4

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