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The Electrical Resistance R of a Wire of Unit Length

Question 95

Multiple Choice

The electrical resistance R of a wire of unit length and cross-sectional radius x is given by R = The electrical resistance R of a wire of unit length and cross-sectional radius x is given by R = , where K is a non-zero constant real number. By approximately what percentage does the resistance R change if the diameter of the wire is decreased by 6%? A) -6% B) -9% C) 12% D) 6% E) -12% , where K is a non-zero constant real number. By approximately what percentage does the resistance R change if the diameter of the wire is decreased by 6%?


A) -6%
B) -9%
C) 12%
D) 6%
E) -12%

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