Question

A defibrillator is a device used to shock the heart back to normal beat patterns. To do this, it discharges a 15 μF capacitor through paddles placed on the skin, causing charge to flow through the heart. Assume that the capacitor is originally charged with 5.0 kV .

Part A

What is the charge initially stored on the capacitor?

	3×10−9 C
	7.5×104 C
	7.5×10−2 C
	7.5×10−5 C Part B What is the energy stored on the capacitor? What is the energy stored on the capacitor? 1.9×108 J 380 J 190 J 1.9×10−4 J Part C If the resistance between the two paddles is 100 Ω when the paddles are placed on the skin of the patient, how much current ideally flows through the patient when the capacitor starts to discharge? 5×105 A 50 A 2×10−2 A 5×10−2 A Part D If a defibrillator passes 17 A of current through a person in 90 μs . During this time, how much charge moves through the patient? If a defibrillator passes 17 {\rm A} of current through a person in 90 {\rm \mu s} . During this time, how much charge moves through the patient? 190 mC 1.5 C 1.5 mC 17 C

Answer 1