I

I ² R: The expression for power that comes from the flow of current through a resistance: P = I ² R.
IEEE: Institute of Electrical and Electronics Engineers.
ITIC: Information Technology Industry Council, which replaced the former Computer Business Equipment Manufacturers Association.
ITIC curve: Replaces the former CBMAcurve and provides a set of curves developed by the Information Technology Industry Council (ITIC) that represents the withstand capabilities of computers in terms of the magnitude and duration of the voltage disturbance.
impedance: Forces that resist current flow in ac circuits; i.e., resistance, inductive reactance, and capacitive reactance.
impulse (notch): A disturbance of the voltage waveform that lasts less than 1/2 cycle (1 millisecond) and occurs in opposite polarity to the waveform (see transient).
impulsive transient: A sudden nonpower frequency change in the steady-state condition of voltage or current that occurs in unidirectional polarity (primarily either positive or negative).
incandescent lamp: A type of light that uses electric current flowing through a tungsten filament to heat the filament to the point where it glows (incandescence) and produces illumination.
inductance: A coil s ability to store energy in the form of a magnetic field and oppose changes in current flowing through it. The value of inductance is a function of the cross-sectional area, number of turns of coil, length of coil and core material.
inductive reactance: The impedance to alternating current produced by inductors.
inductor (choke): A coiled conductor usually wrapped around a ferrous core; tends to oppose any change in...

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