You decide to use a toaster to toast a slice of bread using the wall outlet of your home. Knowing that the voltage supply of your home is alternating given by the function V = 120 sin (2 πft), where f = 120 Hz and t is time in seconds: a) If the toaster oven uses nichrome wire that measures a total length of 0. 25 m with a thickness of 0.5 mm (diameter of wire), what is the resistance of the wire when heats up to 100.0 C from room temperature of 20. 0 °C? b) Knowing the resistance value of the wire from part a) and using Ohms Law, write the alternating current equation. c) What is the rms value for current and voltage for our toaster oven circuit? d) How much average electrical energy J does the toaster oven use if you toast your bread for 1 minute?

You decide to use a toaster to toast a slice of bread using the wall outlet of your home. Knowing that the voltage supply of your home is alternating given by the function V = 120 sin (2 πft), where f = 120 Hz and t is time in seconds: a) If the toaster oven uses nichrome wire that measures a total length of 0. 25 m with a thickness of 0.5 mm (diameter of wire), what is the resistance of the wire when heats up to 100.0 C from room temperature of 20. 0 °C? b) Knowing the resistance value of the wire from part a) and using Ohms Law, write the alternating current equation. c) What is the rms value for current and voltage for our toaster oven circuit? d) How much average electrical energy J does the toaster oven use if you toast your bread for 1 minute?

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter29: Direct Current (dc) Circuits

Section: Chapter Questions

Problem 19PQ

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