The Fundamentals of Electrical Engineering: for Mechatronics by Hüning Felix

Author:Hüning, Felix [Hüning, Felix]
Language: eng
Format: epub
Publisher: De Gruyter
Published: 2014-06-27T04:00:00+00:00

Fig. 7.13: Voltage across the capacitor (and the resistor), time constant τ=R·C determines how quickly the voltages decreases and settles to its final value..

After determination of the voltage the currents through the resistor and the capacitor are:

The energy in the capacitor will also decrease:

After a very long time the capacitor will be completely discharged (never completely but nearly…) and hence the energy will be zero. As energy cannot vanish and as the resistor is the only element in the circuit besides the capacitor it is obvious that the energy is dissipated (converted to heat) in the resistor. The power absorbed by the resistor is

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