Calculate resistance of a wire if the following are given -

\(Mass\) = \(50 g\)

\(Resistivity\) = \(1.8 * 10^{-9} ohm-metre\)

\(Length\) = \( 5 m\)

\(Density\) = \(1.8 * 10^{6} kg/m^{2}\)

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## Comments

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TopNewestMass=volume×density. Volume=area×length. Resistance=resistivity×length÷area Resistance=resistivity ×length×length÷volume

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\(R=\rho\cdot \dfrac{L}{A}\)

We only need to find \(A\). For that, first figure out what the volume is (using density and mass) and then divide it by L to get \(A\).

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5*10^{-15}

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10^-95) / SLog in to reply

Can you provide more detailed steps along with the answer? i tried the same method.

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