A toaster has a Nichrome (a=4.5×10-4 °C¯-l) heating element that has a resistance of Ro= 80 Q at a temperature T=20 °C. When the toaster is turned on, the resistance of the element rises to 89.3 2 and its temperature is increased. Find the final temperature (in °C) of the heating element.

A toaster has a Nichrome (a=4.5×10-4 °C¯-l) heating element that has a resistance of Ro= 80 Q at a temperature T=20 °C. When the toaster is turned on, the resistance of the element rises to 89.3 2 and its temperature is increased. Find the final temperature (in °C) of the heating element.

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter20: Electric Current, Resistance, And Ohm's Law

Section: Chapter Questions

Problem 12CQ: Explain why R=R0(1 + a?T) for the temperature variation of the resistance R of an object is not as...

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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 toaster has a Nichrome (a=4.5×10-4 °C-l) heating element that has a resistance of Ro= 80 Q at a
temperature T=20 °C. When the toaster is turned on, the resistance of the element rises to 89.3 Q and its
temperature is increased. Find the final temperature (in °C) of the heating element.

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