A wire of length $15\text{ m}$ made of a material of resistivity $1.8 \times 10^{-6}\ \Omega\text{m}$ has a resistance of $0.27\ \Omega$. Determine th...

Assessment: JAMB UTME - Physics - 1992 Subject: Physics

Question 1 Report

A wire of length $15\text{ m}$ made of a material of resistivity $1.8 \times 10^{-6}\ \Omega\text{m}$ has a resistance of $0.27\ \Omega$. Determine the area of the wire

1.5 x 10-4m2

1.0 x 10-4m2

2.7 x 10-5m2

7.3 x 10-6m2

Answer Details

Resistivity =

\frac{Resiatance x Area}{l e n g t h}

1.6 x 10-6 = $\frac{15 \times A r e a}{0.27}$

Area = 1.0 x 10-4m2

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A wire of length \(15\text{ m}\) made of a material of resistivity \(1.8 \times 10^{-6}\ \Omega\text{m}\) has a resistance of \(0.27\ \Omega\). Determine th...

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