An electrical system is often used to drive a non-electrical system (in an electric stove, for example, electric energy is converted to heat). Interactions between electrical and non-electrical systems are often described in terms of power. Electrical power associated with a particular circuit element is the product of the current passing through the element and the voltage difference across the element.
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Electrical Basics
The fact that charges exert forces on one another over a distance is explained by the idea of an electric field.
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Electrical Basics
ll electrical principles rely on the concept of electrical charge, or simply charge. The concept of charge is based on the observation that some bodies exert non-gravitational forces on one another when they are placed close together. Like gravity, this force acts at a distance; but unlike gravity, the bodies can either attract or repel each other (gravity only attracts masses to one another).
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An explanation of the layout of breadboards and how they are used to form electrical connections.
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The Base for Electrical Components
Electronic components are often assembled and interconnected on a flat surface known as a circuit board. The several types of existing circuit boards may be divided into two broad categories: those intended for prototype or experimental circuits, and those intended for production and/or commercial sale.
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Magnetism
Similarly to charges, magnets exert forces on one another over a distance. Each magnet has two poles—a north and a south pole. A magnet's north pole will be attracted to the south pole of another magnet, while the north poles or south poles of two magnets will repel each other.
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