If a metal wire 4m long and cross-sectional area 0.8 mm2 has a resistance of 60, find the resistivity of the wire
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Correct Answer: Option C
Explanation:
\(P = \frac{Ra}{L}\Omega m\)
\(P = \frac{6 \times 0.8}{4}\Omega m\)
\(P = 1.2 \times 10^{-6}\Omega m\)
\(P = \frac{Ra}{L}\Omega m\)
\(P = \frac{6 \times 0.8}{4}\Omega m\)
\(P = 1.2 \times 10^{-6}\Omega m\)