In a defibrillator, a charged capacitor is connected to paddles that make electr
ID: 1586674 • Letter: I
Question
In a defibrillator, a charged capacitor is connected to paddles that make electrical contact with the patient's skin. If gel is applied to the patient's chest to make a good connection between the paddles and the skin, the effective resistance through which the capacitor discharges is 51.5 .
With a maximum current of 40.2, I found the voltage of capacitor to be 2070.3.
If the current 1.16 ms later is 11.6 A, what is the capacitance?
I tried to follow the previous answers to this question on chegg, but I cannot follow the calculations. Thank you!
Explanation / Answer
during the discharge of capacitor
current across the capacitor is I = I° e ^- t / RC
e ^- t / RC = I/I°
e ^ t / RC = I°/I
t/RC = log(40.2/11.6)
t/RC = 1.243
RC = 1.16*10^-3/1.243 = 0.933*10^-3
C = 18.12*10^-6 F