Answered: The figure below shows a simplified…

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter15: Oscillations

Section: Chapter Questions

Problem 27P: Each piston of an engine makes a sharp sound every other revolution of the engine. (a) How fast is a...

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The figure below shows a simplified model of a cardiac defibrillator, a device used to resuscitate patients in ventricular fibrillation. When the switch S is toggled to the left, the capacitor C charges through the resistor R. When the switch is toggled to the right, the capacitor discharges current through the patient's torso, modeled as the resistor Rtorso, allowing the heart's normal rhythm to be reestablished. (a) If the capacitor is initially uncharged with C = 7.00 µF and e m f = 1270 V, find the value of R (in ohms) required to charge the capacitor to a voltage of 795 V in 1.60 s. Ω (b) If the capacitor is then discharged across the patient's torso with Rtorso = 1230 Ω, calculate the voltage (in V) across the capacitor after 5.50 ms. V

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figure below shows a simplified model o
d to resuscitate patients in ventricular fib
R
C
torso
en the switch S is toggled to the left, the
stor R. When the switch is toggled to the
rent through the patient's torso, modeled
heart's normal rhythm to be reestablishe
If the capacitor is initially uncharged with
find the value of R (in ohms) required to
voltage of 795 V in 1.60 s.
Ω

Expert Solution

Step 1

(a)

Let T be defined as the RC constant.

Therefore, the voltage of the capacitor while charging at time t is given as,

$V = V_{m a x} [1 - e^{(- \frac{t}{T})}]$

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