A nichrome toaster wire, initially at room temperature, carries 2.75 A immediately after it s turned on. After the wire heats, the current drops to 2.46 A. What's the temperature of the nichrome then? ( a = 0.4 × 10 3 °C-1)

A nichrome toaster wire, initially at room temperature, carries 2.75 A immediately after it s turned on. After the wire heats, the current drops to 2.46 A. What's the temperature of the nichrome then? ( a = 0.4 × 10 3 °C-1)

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter28: Current And Resistance

Section: Chapter Questions

Problem 57PQ

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Concept explainers

Microscopic view of current

In physics, the term current is expressed as the rate of flow of electric charges across the area per unit time (I=q/t). It propagates along in the direction of the motion of positive charges. When the current is caused by the motion of electrons, the direction of the current is opposite to the flow.

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A nichrome toaster wire, initially at room temperature, carries 2.75 A immediately after it s turned on.
After the wire heats, the current drops to 2.46 A. What's the temperature of the nichrome then? (
a = 0.4 × 10 3 °C-1)

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