What is the current through a $40.0 - \mathrm { m }$ length of metal wire with a radius of $0.0 \mathrm {~mm}$ when it is connected to a $16.0 \mathrm {~V} \text { ? }$ power source? The resistivity of the metal is 1.68 × 10^-8 Ω ∙ m. A)0 A B)0 x 10⁸ A C)0 nA

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Quizplus · Accepted Answer

The radius of the wire is given as $0.0 \mathrm{~mm}$, which means the wire effectively has no cross-sectional area through which current can flow. Regardless of the voltage applied or the material's resistivity, if there's no pathway for the current (due to the absence of a cross-sectional area), the current through the wire must be $0 \mathrm{~A}$.

What Is the Current Through A 40.0−m40.0 - \mathrm { m }40.0−m

What Is the Current Through A $40.0 - \mathrm { m }$