Capacitance

Moving Charges and Electric Currents

Moving Charges and Electric Currents Chapters 22 through 26 deal largely with- electrostatics-that is, with charges  at rest. With this chapter we begin to focus on electric currents-that is, charges in motion. examples of electric currents abound, ranging from the large currents that constitute lightning strokes to the tiny nerve currents that regulate’nor muscular activity. …

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Capacitance

Capacitance During ventricular fibrillation, a common type of heart attack, the chambers of the heart fail to pump blood  because their muscle fibers randomly contract and relax. To save a victim of ventricular fibrillation, the heart muscle must be shocked to reestablish its normal rhythm. For that, 20 A of current must be sent through …

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