A defibrillator consists of a 15 μF capacitor that is charged to 9.0 kV. (a) If the capacitor is

step 1 Charge stored on the capacitor is given by capacitance multiplied by the potential difference Pu

A defibrillator consists of a 15 μF capacitor that is...

A defibrillator consists of a $15 \mu F$ capacitor that is charged to $9.0 \mathrm{kV}$. (a) If the capacitor is discharged in $2.0 \mathrm{ms},$ how much charge passes through the body tissues?
(b) What is the average power delivered to the tissues?

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Key Concepts

Average Power

Average power is defined as the total energy delivered over a time interval divided by the duration of that interval (P = Energy/Time). In the context of capacitor discharge, it measures the rate at which the stored energy is delivered to a load or circuit element.

Capacitance

Capacitance is the property of a component or device that enables it to store electric charge. It is defined as the ratio of the charge stored on the capacitor to the voltage across it (Q = C × V), making it a crucial parameter in circuits involving charge storage and discharge processes.

Charge Storage and Discharge

The concept of charge storage in capacitors involves storing electrical energy as separated charges on two conductive plates. When a capacitor discharges, the stored charge moves through the circuit, and calculating the total charge transferred is essential for understanding energy delivery in a circuit.

Energy Stored in a Capacitor

Energy stored in a capacitor is given by the formula U = ½ C V², which quantifies the energy available for discharge. This concept is key to understanding how electrical energy is accumulated in the capacitor and then converted to other forms when the capacitor discharges.

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