Calculate the resistance per meter length of a constantan wire of diameter 0.4 mm. Resistivity = 4.7 × 10⁻⁵ Ω·m.
University of Ilorin PHY102 2025A past question
- 374 Ω/m
- 420 Ω/m
- 310 Ω/m
- 500 Ω/m
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