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In electrical engineering, impedance is the opposition to alternating current presented by the combined effect of resistance and reactance in a circuit. [1]Quantitatively, the impedance of a two-terminal circuit element is the ratio of the complex representation of the sinusoidal voltage between its terminals, to the complex representation of the current flowing through it. [2]
In electrical engineering, the input impedance of an electrical network is the measure of the opposition to current (), both static and dynamic (), into a load network or circuit that is external to the electrical source network.
In analog circuits a high impedance node is one that does not have any low impedance paths to any other nodes in the frequency range being considered.Since the terms low and high depend on context to some extent, it is possible in principle for some high impedance nodes to be described as low impedance in one context, and high impedance in another; so the node (perhaps a signal source or ...
Impedance is the complex-valued generalization of resistance.It may refer to: Acoustic impedance, a constant related to the propagation of sound waves in an acoustic medium
In electrical engineering, the output impedance of an electrical network is the measure of the opposition to current flow (), both static and dynamic (), into the load network being connected that is internal to the electrical source.
Impedance is the opposition by a system to the flow of energy from a source. For constant signals, this impedance can also be constant. For varying signals, it usually changes with frequency.
The number of childfree women is at a record high: 48 percent of women between the ages of 18 and 44 don’t have kids, according to 2014 Census numbers. The Huffington Post and YouGov asked 124 women why they choose to be childfree.
Adolf Hitler in the early 1920s, about the time he began writing Mein Kampf (1925). A big lie (German: große Lüge) is a gross distortion or misrepresentation of the truth primarily used as a political propaganda technique.