What Length of a Certain Metal Wire of Diameter 0

question 19

Multiple Choice

What length of a certain metal wire of diameter 0.15 mm is needed for the wire to have a resistance of 15 Ω? The resistivity of this metal is 1.68 × 10^-8 Ω • m.

• A) 16 mm
• B) 16 cm
• C) 1.6 m
• D) 16 m
• E) 160 m

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