Electrical resistance The electrical resistance R of a
Chapter 3, Problem 3.5.19(choose chapter or problem)
Electrical resistance The electrical resistance R of a wire varies directly as its length l and inversely as the square of its diameter d.(a) Express R in terms of l, d, and a constant of variation k. (b) A wire 100 feet long of diameter 0.01 inch has a resistance of 25 ohms. Find the value of k in part (a).(c) Sketch a graph of the relationship between R and d for(d) Find the resistance of a wire made of the same material that has a diameter of 0.015 inch and is 50 feet long.
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