Answered: Figure 20.38 The capacitor in a…

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Figure 20.38 The capacitor in a defibrillation unit drives a current through the heart of a patient.

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter23: Electric Forces

Section: Chapter Questions

Problem 13PQ

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Question

(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 = I ²R .)

Figure 20.38 The capacitor in a defibrillation unit drives a current
through the heart of a patient.

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