A metal wire has a resistance of 25.00 W under room temperature conditions of 25°C. When the wire is heated to 85°C the resistance increases by 1.95 W. What is the temperature coefficient of resistivity of this metal?
a. 1.3 × 10^-3 (°C)-1
c. 5.0 × 10^-4 (°C)-1
b. 1.5 × 10^-3 (°C)-1
d. 2.5 × 10^-3 (°C)-1
A
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