Part A A cylindrical tungsten filament 17.0 cm long with a diameter of 1.30 mm is to be used in a machine for which the temperature will range from room temperature (20 "C) up to 120 °C It will carry a current of 12.0 A at all temperatures ( Resistivity of tungsten at 20 °Cis 5.25 x 10S.m, the temperature coefficient of resistivity at 20 "Cis 0.0045 °C What will be the maximum electric field in this filament? Express your answer using two significant figures. E = V/m Submit Request Answer Part B What will be its resistance with that field?. Express your answer using two significant figures. R=
Part A A cylindrical tungsten filament 17.0 cm long with a diameter of 1.30 mm is to be used in a machine for which the temperature will range from room temperature (20 "C) up to 120 °C It will carry a current of 12.0 A at all temperatures ( Resistivity of tungsten at 20 °Cis 5.25 x 10S.m, the temperature coefficient of resistivity at 20 "Cis 0.0045 °C What will be the maximum electric field in this filament? Express your answer using two significant figures. E = V/m Submit Request Answer Part B What will be its resistance with that field?. Express your answer using two significant figures. R=
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CHW-Ch25
Exercise 25.15
Part A
A cylindrical tungsten filament 170 cm long with a diameter
of 1.30 mm is to be used in a machine for which the
temperature will range from room temperature (20 "C) up to
120 °C It will carry a current of 12.0 A at all temperatures (
Resistivity of tungsten at 20 °Cis 5.25 x 10 -m. the
temperature coefficient of resistivity at 20 "Cis 0.0045 °C
What will be the maximum electric field in this filament?
Express your answer using two significant figures.
E =
V/m
Submit
Request Answer
Part B
What will be its resistance with that field?.
Express your answer using two significant figures.
A24
R=
here to search
17
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