Question: A certain lightbulb has a tungsteA certain lightbulb has a tungsten filament with a resistance of 1 9 . 0 when at 2 0 .

A certain lightbulb has a tungsteA certain lightbulb has a tungsten filament with a resistance of

19.0

when at

20.0

C and

140

when hot. Assume the resistivity of tungsten varies linearly with temperature even over the large temperature range involved here. Find the temperature of the hot filament.n filament with a resistance of

19.0

when at

20.0

C and

140

when hot. Assume the resistivity of tungsten varies linearly with temperature even over the large temperature range involved here. Find the temperature of the hot filament.

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