In the figure circuit section AB absorbs energy at a rate of 55 W when current i 0.90 A through it is in the indicated direction. Resistance R = 2.0 Q. (a) What is the potential difference between A and B? Emf device X lacks internal resistance. (b) What is its emf? Units (a) Number i Units (b) Number

In the figure circuit section AB absorbs energy at a rate of 55 W when current i 0.90 A through it is in the indicated direction. Resistance R = 2.0 Q. (a) What is the potential difference between A and B? Emf device X lacks internal resistance. (b) What is its emf? Units (a) Number i Units (b) Number

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 12CQ: Explain why R=R0(1 + a?T) for the temperature variation of the resistance R of an object is not as...

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