Question 5: (1 point) A defibrillator is a device used to send a significant current through the heart muscle. This current can correct certain types of cardiac arrhythmia (and hence save somebodies life!). These devices use large capacitors to store the charge. What is one reason for using capacitors rather than simply batteries for delivering the charge. (a) Capacitors can hold more charge than batteries (b) Capacitors allow the charge to be delivered more quickly than many batteries (c) We have to use capacitors for something If the capacitor has to store 500 J or energy, and the voltage can be as large as 110 V, what size capacitor is necessary? Farads How much charge is stored in the capacitor above? Question 6: (1 point) A Parallel plate capacitor is charged fully using a 30 V battery such that the charge on it is 130 pC and the plate separation is 5 mm. The capacitor is then disconnected from the battery and the plate separation doubled. What is: The new charge on the plates after the separation is increased C The new potential difference between the plates The Field between the plates after increasing the separation N/C How much work does one have to do to pull the plates apart