Physics

Physics

Problem

Nichrome has resistivity 1.1×10−6 Ω m1.1\times10^{-6}\,\Omega\,\text{m}. What length of nichrome wire of diameter 0.40 mm0.40\,\text{mm} is required to make a resistor of 5 Ω5\,\Omega? (Take π=3.14\pi = 3.14.)

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