Multiple Choice
Solve.
-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 0.4 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 1620 cm?
A) 1.62 ohm
B) 162 ohm
C) 0.81 ohm
D) 405 ohm
Correct Answer:
Verified
Correct Answer:
Verified
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