Nichrome wire is used in some radiative heaters. (a) Find the resistance needed if the average power output is to be 1.24 kW utilizing 120 V AC. x How is power related to the resistance and voltage? (b) What length of Nichrome wire, having a cross-sectional area of 4.90 mm², is needed if the operating temperature is 500°C? The resistivity of Nichrome at 20.0°C is 100 x 10-8 m and the temperature coefficient of resistivity is 0.4 x 10-3-1. m (c) What average power will it draw when first switched on? KW

Nichrome wire is used in some radiative heaters. (a) Find the resistance needed if the average power output is to be 1.24 kW utilizing 120 V AC. x How is power related to the resistance and voltage? (b) What length of Nichrome wire, having a cross-sectional area of 4.90 mm², is needed if the operating temperature is 500°C? The resistivity of Nichrome at 20.0°C is 100 x 10-8 m and the temperature coefficient of resistivity is 0.4 x 10-3-1. m (c) What average power will it draw when first switched on? KW

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter21: Current And Direct Current Circuits

Section: Chapter Questions

Problem 13P: While taking photographs in Death Valley on a day when the temperature is 58.0C, Bill Hiker finds...

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