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where is the length of the conductor, measured in metres [m], A is the cross-section area of the conductor measured in square metres [m 2], σ is the electrical conductivity measured in siemens per meter (S·m −1), and ρ is the electrical resistivity (also called specific electrical resistance) of the material, measured in ohm-metres (Ω·m ...
Electroluminescence — The phenomenon wherein a material emits light in response to an electric current passed through it, or to a strong electric field. Electrostatic induction — Redistribution of charges in a conductor inside an external static electric field, such as when a charged object is brought close.
A semiconductor device is an electronic component that relies on the electronic properties of a semiconductor material (primarily silicon, germanium, and gallium arsenide, as well as organic semiconductors) for its function. Its conductivity lies between conductors and insulators. Semiconductor devices have replaced vacuum tubes in
An electrical cable is an assembly of one or more wires running side by side or bundled, which is used as an electrical conductor to carry electric current. Electrical cables are used to connect two or more devices, enabling the transfer of electrical signals, power, or both from one device to the other. Physically, an electrical cable is an ...
An electromagnetic coil is an electrical conductor such as a wire in the shape of a coil (spiral or helix). [ 1 ] [ 2 ] Electromagnetic coils are used in electrical engineering , in applications where electric currents interact with magnetic fields , in devices such as electric motors , generators , inductors , electromagnets , transformers ...
Hook-up wire is small-to-medium gauge, solid or stranded, insulated wire, [11] used for making internal connections inside electrical or electronic devices. It is often tin-plated to improve solderability. Wire bonding is the application of microscopic wires for making electrical connections inside semiconductor components and integrated circuits.
A measure of a substance's ability to pass an electric current. electrical conductor An object that carries an electric current, with little loss. electrical contact A separable part of an electric device that carries current when touching another contact. electrical discharge machining (EDM) Shaping of a work place by small sparks. electrical ...
Copper is the electrical conductor in many categories of electrical wiring. [ 3 ] [ 4 ] Copper wire is used in power generation , power transmission , power distribution , telecommunications , electronics circuitry, and countless types of electrical equipment . [ 5 ]