Calculate the resistance per meter length of constantan wire with resistivity 4.7 × 10⁻⁵ Ω·m and diameter 0.4 mm.
University of Ilorin PHY102 2025A past question
- 0.15 Ω/m
- 0.37 Ω/m
- 0.23 Ω/m
- 0.42 Ω/m
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