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1. |
If the resistance of a metal wire at ice point is 500 Ω and 510 Ω at steam point, and the resistance of wire is 502 Ω the room temperature would be |
A. | 20 °C |
B. | 10 °C |
C. | 40 °C |
D. | 30 °C |
Answer» B. 10 °C | |