How long is a wire made from 100 cm³ of copper if its resistance is 8.5 ohms? The resistivity of copper is 1.7 x 10^-5 W·m. A)7.1 m B)1.7 x 10² m C)2.2 x 10² m D)3.0 x 10³ m

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Quizplus · Accepted Answer

The resistance of a wire is given by the formula R = ρ * L / A, where ρ is the resistivity of the material, L is the length of the wire, and A is the cross-sectional area of the wire. We can rearrange this formula to solve for L: L = R * A / ρ. Plugging in the given values, we get L = 8.5 ohms * (100 cm^3 / (1.7 x 10^-5 W·m)) = 7.1 m.

How Long Is a Wire Made from 100 Cm3 of Copper

How Long Is a Wire Made from 100 Cm³ of Copper