A 220 V potential difference is maintained across an electric heater that is made from a nichrome wire of resistance 20. a. ) Find the current in the wire and the power rating of the heater. b. ) At an estimated price of 0.85 LE ( Egyptian pound ) per kilowatt - hour of electricity , what is the cost of operating the heater for 3hr
A 220 V potential difference is maintained across an electric heater that is made from a nichrome wire of resistance 20. a. ) Find the current in the wire and the power rating of the heater. b. ) At an estimated price of 0.85 LE ( Egyptian pound ) per kilowatt - hour of electricity , what is the cost of operating the heater for 3hr
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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A 220 V potential difference is maintained across an electric heater that is made from a nichrome wire of resistance 20.
a. ) Find the current in the wire and the power rating of the heater.
b. ) At an estimated price of 0.85 LE ( Egyptian pound ) per kilowatt - hour of electricity , what is the cost of operating the heater for 3hr?
(Answer A and b please. This is not graded)
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