Question

In: Physics

An electric space heater has a Nichrome heating element with a resistance of 6 Ω at...

An electric space heater has a Nichrome heating element with a resistance of 6 Ω at 20°C. When 120 V are applied, the electric current heats the Nichrome wire to 1004°C. The temperature coefficient of resistivity of Nichrome is 4 x 10-4 K-1.

(a) What is the initial current drawn by the cold heating element?

(b) What is the resistance of the heating element at 1004°C?

(c) What is the operating wattage of this heater?

Solutions

Expert Solution

a)Initial current,

b)resistance of heating element at 1004 degrees,

  

Where temperature coefficient of resistivity

c) Operating wattage of heater at 1004,

genius_generous answered 2 years ago
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