A defibrillator is used by emergency medical staff to shock the heart of an acci

Question

A defibrillator is used by emergency medical staff to shock the heart of an accident victim by applying a 10,000-V potential difference across the victim's chest. If the defibrillator has an internal resistance of 12 ohm and the victim's heart has a resistance of 315 ohm, what is the current that passes through the victim's heart the moment the defibrillator is discharged? A If the defibrillator delivers this current over a 15-ms time interval, how many electrons pass through the heart during this process? electrons

Explanation / Answer

Here ,

V = 10000 V

a) current through heart = V/Req

current through heart = 10000/(12 + 315)

current through heart = 30.6 A

the current through heart is 30.6 A

B) time interval ,t = 15 ms

number of electrons passed = charge passing/charge on each electron

number of electrons passed = 303.6 * 0.015/(1.602 *10^-19)

number of electrons passed = 2.84 *10^19

the number of electrons passed is 2.84 *10^19

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