Describe how a defibrillator uses a capacitor to affect a patient\'s heart. A ca

Question

Describe how a defibrillator uses a capacitor to affect a patient's heart. A capacitor releases stored energy into the patient's heart. A capacitor absorbs charge from the patient's heart. A capacitor cancels the electric field in the patient s heart. A capacitor creates an equipotential surface around the patient's heart. How does the power dissipated by a circuit change if both the current and the resistance are doubled? It decreases by a factor of 18. It decreases by a factor of 14. It Increases by a factor of 4. It increases by a factor of 8 Which type of materials would you expect to have the smallest resistivity's? semiconductors insulators conductors

Explanation / Answer

5. Usually capacitor stores the charge. Here A capacitor releases stored energy into the patient's heart

6. Power = i2 R

       current doubled and resistance doubled

    hence it increases by a factor 8

7. conductors

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