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1. An electric heater has a Nichrome heating element with a resistance of 8.00 N at 20°C. When 120 V are applied, the electric current heats the Nichrome wire to 900°C. What is the operating wattage of this heater? (The temperature coefficient of resistivity of Nichrome is a = 0.0004 Co-1) Watts

1. An electric heater has a Nichrome heating element with a resistance of 8.00 N at 20°C. When 120 V are applied, the electric current heats the Nichrome wire to 900°C. What is the operating wattage of this heater? (The temperature coefficient of resistivity of Nichrome is a = 0.0004 Co-1) Watts

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College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
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1. An electric heater has a Nichrome heating element with a resistance of 8.00 2 at 20°C. When 120 V are applied, the electric current heats the Nichrome wire to 900°C. What is the operating wattage of this heater? (The temperature coefficient of resistivity of Nichrome is a = 0.0004 Co-1) Watts of19 o01 of19 of19 o01
Transcribed Image Text:1. An electric heater has a Nichrome heating element with a resistance of 8.00 2 at 20°C. When 120 V are applied, the electric current heats the Nichrome wire to 900°C. What is the operating wattage of this heater? (The temperature coefficient of resistivity of Nichrome is a = 0.0004 Co-1) Watts of19 o01 of19 of19 o01
Expert Solution
Step 1

Given,

Resistance = 8 Ω

Initial Temperature (T0) =20°C

Final Temperature (T)=900°C

current (U) =120 V

Temperature coefficient of resistivity,α=0.0004 C-1 

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