1. Definitions and fundamental properties
1.1 Topological definitions and conventions
Dipole: a dipole is an element connected to the outside by two terminals A and B, the current flowing into one being equal to that flowing out the other.
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Sign conventions: figure 1 shows the representation of a dipole and indicates the conventions for the current i flowing through it and the voltage v at its terminals.
i is expressed in amperes and v in volts.
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Definitions and fundamental properties