Abstract
Publisher Summary An alternating current is one in which the direction of the current changes with time. A potential difference that varies sinusoidally with time is termed as ac potential difference. A current that varies sinusoidally with time is called ac current. The average ac current in any element in a circuit is zero, and the average ac potential difference across any element in a circuit is zero. Electric energy can be transmitted with minimal loss from an oscillating source to a system where it can then be used. The most useful oscillating electric energy source produces a potential difference that varies sinusoidally with time. Resistors, capacitors, and inductors are used widely in electrical circuits involving both alternating and direct currents. This chapter discusses current in (and the potential difference across) a resistor, a capacitor, and an inductor when each is connected to an ac generator. It explains alternating currents and its types.
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