Question

An important use of capacitors is in defibrillators. A defibrillator works by discharging a capacitor across a human chest, causing a current to pass through the heart. That current can reset erratic heartbeats, allowing the heart to function properly again. One defibrillator manufacturer sells a capacitor with a capacitance of 196 mu F that is rated at a voltage of 2.2kV. The manufacturer claims that these capacitors can provide peak currents of up to 300A. Assuming a fully-charged capacitor is connected directly across a person's chest and the peak current is 300A, how long would it take to discharge 99% of the charge on the capacitor?

Correct Answer is 6.62ms

Answer 1

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