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Electrical circuits

Capacitance
Ability of a body to store an electrical charge
Cooper pair
Pair of electrons (or other fermions) bound together at low temperatures in a certain manner which is responsible for superconductivity as described in the BCS theory
Electrical conductor
Object or material which allows the flow of electric charge with little energy loss
Electrical impedance
The opposition of a circuit to a current when a voltage is applied
Electrical network
Assemblage of connected electrical elements
Electrical reactance
A circuit element's opposition to changes in current due to its inductance or capacitance
Electrical resistance and conductance
Opposition to the passage of an electric current
Gain (electronics)
Ability of a circuit to increase the power or amplitude of a signal
Ground (electricity)
Reference point in an electrical circuit from which voltages are measured
High-temperature superconductivity
Superconductive behavior at temperatures much higher than absolute zero
Inductance
Property of electrical conductors
Insulator (electricity)
Material that does not conduct an electric current
Kirchhoff's circuit laws
Two equalities that deal with the current and potential difference
Ohm's law
Law according to which the current through a conductor between two points is directly proportional to the voltage across the two points
Semiconductor
Material that has electrical conductivity intermediate to that of a conductor and an insulator
Superconductivity
Electrical conductivity with exactly zero resistance