A defibrillator has a 130-mF capacitor charged to 2000 V and an internal resistance of 30 W. If the resistance of the path of the discharge through the patient is 170 W, how much energy is delivered to the patient upon complete discharge of the capacitor?
a. 170 J
c. 220 J
b. 30 J
d. 240 J
C
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A series RLC circuit has a 100-? resistor, a 0.100-?F capacitor, and a 2.00-mH inductor connected across a 120 V rms ac source operating at resonant frequency. What is the rms value of the voltage across the inductor?
A) 170 V B) 150 V C) 120 V D) 54.0 V E) 533 V
For a fixed control volume, the reason why the equation below is:
(A) The integrand is independent of time
(B) The limits of integration are independent of time
(C) The flow is a steady flow
(D) The quantity ?? is independent of position