batteries use ______ energy to make electricity. in a dam, water flows through a(n) _____ current . batteries produce a(n) ______ current . the continuous flow of electricity is called a(n) ________

batteries use ____ energy to make electricity. in a dam, water flows through a(n) _ current . batteries produce a(n) current . the continuous flow of electricity is called a(n) ____

College Physics

10th Edition

ISBN:9781285737027

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter17: Current And Resistance

Section: Chapter Questions

Problem 61AP: A 120.-V motor has mechanical power output of 2.50 hp. It is 90.0% efficient in converting power...

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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.

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batteries use ______ energy to make electricity. in a dam, water flows through a(n) _____ current . batteries produce a(n) ______ current . the continuous flow of electricity is called a(n) ________

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(a) A defibrillator sends a 6.00-A current through the chest of a patient by applying a 10,000-V potential as in the figure below. What is the resistance of the path? (b) The defibrillator paddles make contact with the patient through a conducting gel that greatly reduces the path resistance. Discuss the difficulties that would ensue if a larger voltage were used to produce the same current through the patient, but with the path having perhaps 50 times the resistance. (Hint: The current must be about the same, so a higher voltage would imply greater power. Use this equation for power: P=I2 RP = .)
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