Ventricular Fibrillation Is a Condition of Heart Dysfunction That Can

Ventricular fibrillation is a condition of heart dysfunction that can cause death.Under this condition,the heart quivers in an uncoordinated fashion as opposed to beating regularly.An electric shock to the chest can cause momentary paralysis of the heart muscle,after which the heart sometimes starts organized beating again.A defibrillator is a device that applies a strong electric shock to the chest over a few milliseconds.The device is a simple capacitor of several microfarads,charged to several thousand volts.Electrodes called paddles,about 8 cm across and coated with conducting paste,are held against the chest on both sides of the heart.Assume that one such defibrillator has capacitance of 25 µF and is charged to 4,200 Volts.If the capacitor completely discharges in 3.0 ms,the average power delivered to the chest by the defibrillator is

A) 350.7 kW.
B) 220.4 kW.
C) 110.5 kW.
D) 98.1 kW.
E) 73.5 kW.

Correct Answer:

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