Energy Stored by Capacitor Video Lessons

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Problem: In open-heart surgery a small amount of energy will defibrillate the heart.(a) What voltage is applied to the 8.59  μF capacitor of a heart defibrillator that stores 44.8 J of energy? ________KV (b) Find the amount of stored charge. ________mC

FREE Expert Solution

(a) Energy stored, U,

U=CV22

U = 44.8 J

C = 8.59 × 10-6 F

V=2UC=2×44.88.59×10-6

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Problem Details

In open-heart surgery a small amount of energy will defibrillate the heart.

(a) What voltage is applied to the 8.59  μF capacitor of a heart defibrillator that stores 44.8 J of energy? 

________KV 

(b) Find the amount of stored charge. 

________mC

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