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PHY-2023-CG3-042
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PHY · PHY-2023-CG3-042
Physics
Section B
The resistance of platinum wire at 0°C is 2 Ω and 6.8 Ω at 80°C. The temperature coefficient of resistance of the wire is
A
3 × 10⁻¹ °C⁻¹
B
3 × 10⁻⁴ °C⁻¹
C
3 × 10⁻³ °C⁻¹
D
3 × 10⁻² °C⁻¹
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