A defibrillation unit used to electrically stimulate the heart muscles following a heart attack consistsa 20-µF capacitor charged by a 6000-V potential difference. (a) Calculate the energy released whenthe defibrillator is discharged through the body. (b) How much charge is released?A 0.20-µF capacitor is to be charged through a resistor so that it becomes 63 percent charged in0.10 s. What should the resistance of the capacitor be? (b) What is the time constant if the capacitoris charged through a 20-MΩ resistor?

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University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter10: Direct-current Circuits

Section: Chapter Questions

Problem 69AP: Consider the circuit below. The battery has an emf of = 30.00 V and an internal resistance of r =...

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A defibrillation unit used to electrically stimulate the heart muscles following a heart attack consists
a 20-µF capacitor charged by a 6000-V potential difference. (a) Calculate the energy released when
the defibrillator is discharged through the body. (b) How much charge is released?
A 0.20-µF capacitor is to be charged through a resistor so that it becomes 63 percent charged in
0.10 s. What should the resistance of the capacitor be? (b) What is the time constant if the capacitor
is charged through a 20-MΩ resistor?

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