Multiple Choice
Solve the problem. 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 0.8 ohm when the diameter is 1 mm and the length is
200 cm, what is the resistance when the diameter is 2 mm and the length is 1050 cm?
A) 210.0 ohm
B) 262.5 ohm
C) 1.1 ohm
D) 2.1 ohm
Correct Answer:
Verified
Correct Answer:
Verified
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