Question: A defibrillator containing a 20-F capacitor is used to shock the heart of a patient in serious condition by attaching it to the patients chest.

A defibrillator containing a 20-µF capacitor is used to shock the heart of a patient in serious condition by attaching it to the patient’s chest. Just prior to discharging, the capacitor has a potential difference of 10,000 V across its plates.

(a) What is the energy released into the patient?

(b) If the energy is discharged over 20 ms, what is the power output of the defibrillator?

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