(a) During surgery, a current as small as 20.0 μA applied directly to the heart may cause ventri

Name: Problem 90, Chapter 20: College Physics
Uploaded: 2019-08-18T15:13:27-08:00
Duration: 1 min 9 s
Channel: Ze-Han Lee
Description: (a) During surgery, a current as small as 20.0 μA applied directly to the heart may cause ventricular fibrillation. If the resistance of the exposed heart is 300 Ω, what is the smallest voltage that poses this danger? (b) Does your answer imply that special electrical safety precautions are needed?

step 1 So in this problem, we already know that it caused ventricular vibration to expose the heart. Th

Question

(a) During surgery, a current as small as $20.0 \mu \mathrm{A}$ applied directly to the heart may cause ventricular fibrillation. If the resistance of the exposed heart is $300 \Omega$, what is the smallest voltage that poses this danger? (b) Does your answer imply that special electrical safety precautions are needed?

   (a) During surgery, a current as small as $20.0 \mu \mathrm{A}$ applied directly to the heart may cause ventricular fibrillation. If the resistance of the exposed heart is $300 \Omega$, what is the smallest voltage that poses this danger? (b) Does your answer imply that special electrical safety precautions are needed?

College Physics

Paul Peter Urone,… 1st Edition

Chapter 20, Problem 90

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Solved by Expert Ze-Han Lee

08/18/2019

Step 1

We have a current ($I$) of $20.0 \, \mu \mathrm{A}$ and a resistance ($R$) of $300 \, \Omega$. Show more…

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(a) During surgery, a current as small as $20.0 \mu \mathrm{A}$ applied directly to the heart may cause ventricular fibrillation. If the resistance of the exposed heart is $300 \Omega$, what is the smallest voltage that poses this danger? (b) Does your answer imply that special electrical safety precautions are needed?

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