Physics-ch-27/exercise 53
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Physics for Scientists and Engineers (9th Edition)

Chapter-27

Table of Content


Question 53





Q53: A certain toaster has a heating element made of Nichrome wire. When the toaster is first connected to a -V source (and the wire is at a temperature of C), the initial current is A. The current decreases as the heating element warms up. When the toaster reaches its final operating temperature, the cur- rent is 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?