Calculate the resistance per meter length of constantan wire of diameter 0.4 mm. What length of constantan would be required to make a resistor of 1.5 Ω? Resistivity = 4.70 × 10⁻⁵ Ω·m.
University of Ilorin PHY102 2025A past question
- 6.5 m
- 4.0 m
- 10.2 m
- 12.6 m
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