Multiple Choice
Round to the nearest tenth unless indicated otherwise.
-At a fixed temperature, the resistance R of a wire varies directly as the length l and inversely as the square of its diameter d. If the resistance is 0.48 ohm when the diameter is 1 mm and the length is
240 cm, what is the resistance when the diameter is 3 mm and the length is 430 cm?
A) 22.9 ohm
B) 0.1 ohm
C) 47.8 ohm
D) 0.3 ohm
Correct Answer:
Verified
Correct Answer:
Verified
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