The electrical resistance R of a piece of wire is inversely proportional to the cross-sectional area...
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The electrical resistance R of a piece of wire is inversely proportional to the cross-sectional area A. When A = 5 mm², R = 7.2 ohms. Determine (a) the coefficient of proportionality and (b) the cross-sectional area when the resistance is 4 ohms. The electrical resistance R of a piece of wire is inversely proportional to the cross-sectional area A. When A = 5 mm², R = 7.2 ohms. Determine (a) the coefficient of proportionality and (b) the cross-sectional area when the resistance is 4 ohms.
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