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An electric heater is constructed by applying a potential difference of 107.3V across a wire with a resistance of 5.0 Q. What is the power rating of tho hoator?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter17: Current And Resistance

Section: Chapter Questions

Problem 36P: If electrical energy costs 0.12 per kilowatt-hour, how much does it cost to (a) burn a 100-W...

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Concept explainers

Ohm's law

Ohm’s law is a prominent concept in physics and electronics. It gives the relation between the current and the voltage. It is used to analyze and construct electrical circuits. Ohm's law states that the voltage across a conductor is directly proportional to the current flowing through it.

Path of Least Resistance

In a series of alternate pathways, the direction of least resistance is the actual or metaphorical route that offers the least resistance to forwarding motion by a given individual or body.

Question

An electric heater is constructed by
applying a potential difference of
107.3V across a wire with a resistance
of 5.0 Q. What is the power rating of
the heater?
Select one:
A. 2.56
B. 2.09
C. 2.74
D. 1.92
E. 2.30

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