A certain toaster has a heating element made of Nichrome wire. When the toaster is first connected to a 120-V source (and the wire is at a temperature of 20.0°C), the initial current is 1.80 A. However, the current begins to decrease as the heating element warms up. When the toaster reaches its final operating temperature, the current drops to 1.53 A. (a) Find the power delivered to the toaster when it is at its operating temperature. (b) What is the final temperature of the heating element?
A certain toaster has a heating element made of Nichrome wire. When the toaster is first connected to a 120-V source (and the wire is at a temperature of 20.0°C), the initial current is 1.80 A. However, the current begins to decrease as the heating element warms up. When the toaster reaches its final operating temperature, the current drops to 1.53 A. (a) Find the power delivered to the toaster when it is at its operating temperature. (b) What is the final temperature of the heating element?
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Transcribed Image Text:A certain toaster has a heating element made of Nichrome
wire. When the toaster is first connected to a 120-V source
(and the wire is at a temperature of 20.0°C), the initial
current is 1.80 A. However, the current begins to decrease
as the heating element warms up. When the toaster
reaches its final operating temperature, the current drops
to 1.53 A. (a) Find the power delivered to the toaster when
it is at its operating temperature. (b) What is the final
temperature of the heating element?
Q9
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