A Metal Wire Has a Resistance of 25 $\degree$ CWhen the Wire Is Heated to 85

Multiple Choice

A metal wire has a resistance of 25.00 W under room temperature conditions of 25 $\degree$ C.When the wire is heated to 85 $\degree$ C the resistance increases by 0.75 W.What is the temperature coefficient of resistivity of this metal?

A) 5.0 x 10^-4 ( $\degree$ C) ^-1
B) 1.3 x 10^-3 ( $\degree$ C) ^-1
C) 1.5 x 10^-3 ( $\degree$ C) ^-1
D) 2.5 x 10^-3 ( $\degree$ C) ^-1