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Tensão DC
Circuito RC – http://www.intmath.com/differential-equations/6-rc-circuits.php
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Tensão AC
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Both capacitor and inductor stores energy
The energy in a capacitor cannot change abruptly. By the analysis of the formula we can say that the voltage cannot also change abruptly,
so the voltage in a capacitor is continuous.
By a similar analysis, the energy in a inductor cannot change abruptly, so the current in a inductor is continuous.
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Electrical Impedance
Electrical impedance is the measure of the opposition that a circuit presents to the passage of a current when a voltage is applied.
The voltage applied is an AC sinusoidal voltage.
Impedance possedes both amplitude and phase.
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Fasorial diagram
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The symbol of impedance is Z.
Complex number representation is often more powerful for circuit analysis purposes.
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