A small bulb is rated at 7.50 W when operated at 125 V. The tungsten filament has a temperature coefficient of resistivity a = 4.50 x 10/ °C. When the filament is hot and glowing, its temperature is seven times room temperature (20 °C). What is the resistance of the filament (in ohms) at room temperature? Select one: O a. 1 350
A small bulb is rated at 7.50 W when operated at 125 V. The tungsten filament has a temperature coefficient of resistivity a = 4.50 x 10/ °C. When the filament is hot and glowing, its temperature is seven times room temperature (20 °C). What is the resistance of the filament (in ohms) at room temperature? Select one: O a. 1 350
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![A small bulb is rated at 7.50 W when operated at 125 V. The tungsten filament has a temperature
coefficient of resistivity a = 4.50 x 10 / °C. When the filament is hot and glowing, its
temperature is seven times room temperature (20 °C). What is the resistance of the filament (in
ahms) at room temperature?
Select one:
a.
1 350
O b.
2 080
C.
4 530
d. 5600
e. 234
OS Shot by Hisense H12](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F43b969e5-b139-4e2b-be48-d54201bcfa52%2Fe6ad823e-af29-45d9-97b1-eb9ba9a8be87%2Fhzssvb_processed.jpeg&w=3840&q=75)
Transcribed Image Text:A small bulb is rated at 7.50 W when operated at 125 V. The tungsten filament has a temperature
coefficient of resistivity a = 4.50 x 10 / °C. When the filament is hot and glowing, its
temperature is seven times room temperature (20 °C). What is the resistance of the filament (in
ahms) at room temperature?
Select one:
a.
1 350
O b.
2 080
C.
4 530
d. 5600
e. 234
OS Shot by Hisense H12
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