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Solve the Problem 0.40.4 -In Diameter Has a Resistance Of a Wire

Question 239

Multiple Choice

Solve the problem.
-The resistance of a wire varies directly as its length and inversely as the square of its diameter. A 50 -ft wire with a 0.40.4 -in. diameter has a resistance of 0.0125Ω0.0125 \Omega . Find the resistance of a 20 -ft wire with a diameter of 0.10.1 -in. Round to 4 decimal places if necessary.


A) 0.0800Ω0.0800 \Omega
B) 0.0100Ω0.0100 \Omega
C) 0.3162Ω0.3162 \Omega
D) 0.0025Ω0.0025 \Omega

Correct Answer:

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