An electric flat iron draws a current of 15 A when connected to a 110 V line. a. What is the resistance of the flat iron? b. What is the resistivity of the heating element if it is a wire that is 2.5 cm long with cross-sectional area of 2.0 x 104 m²?

An electric flat iron draws a current of 15 A when connected to a 110 V line. a. What is the resistance of the flat iron? b. What is the resistivity of the heating element if it is a wire that is 2.5 cm long with cross-sectional area of 2.0 x 104 m²?

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 39PE: Unreasonable Results (a) To what temperature must you raise a resistor made of constantan to double...

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Question

1. An electric flat iron draws a current of 15 A when connected to a 110 V line.
a. What is the resistance of the flat iron?
b.
What is the resistivity of the heating element if it is a wire that is 2.5 cm long with cross-sectional area of
2.0 x 104 m??

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