Nichrome has resistivity

PHYSICS · Single correct · CBSE · Physics · Electricity · Electricity

Problem

Nichrome has resistivity

1.1\times10^{-6}\,\Omega\,\text{m}

. What should be the approximate diameter of a

1\,\text{m}

long nichrome wire so that its resistance is

5\,\Omega

? (a)

0.26\,\text{mm}

(b)

0.79\,\text{mm}

(c)

0.53\,\text{mm}

(d)

0.37\,\text{mm}

Related theory

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