Tungsten has a temperature coeffi cient of resistivity of
Chapter , Problem 31(choose chapter or problem)
Tungsten has a temperature coeffi cient of resistivity of 0.0045 (C8) 21 . A tungsten wire is connected to a source of constant voltage via a switch. At the instant the switch is closed, the temperature of the wire is 28 8C, and the initial power delivered to the wire is P0. At what wire temperature will the power that is delivered to the wire be decreased to 1 2 P0?
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