Multiple Choice
The electrical resistance, R, of a wire is directly proportional to its length, l, and inversely proportional to the square of its diameter, d. A wire 100 meters long of diameter 5 millimeters has a resistance of 8 ohms. Find the resistance of a wire made of the same material that has a diameter of 4 millimeters and is 64 meters long.
A)
B)
C)
D)
E)
Correct Answer:

Verified
Correct Answer:
Verified
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