The time constant for the RC circuit:
The voltage across the capacitor when discharging:
Resistance, R = τ/C
A heart defibrillator being used on a patient has an RC time constant of 10.0 ms due to the resistance of the patient and the capacitance of the defibrillator.
(a) If the defibrillator has an 8.00 F capacitance, what is the resistance of the path through the patient?
(b) If the initial voltage is 12.0 kV, how long does it take to decline to 6.00 ×102 V?
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