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Encyclopedia of Electrical Engineering
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Encyclopedia of Electrical Engineering
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Passive Circuit Elements

Passive circuit Elements

Passive Elements can be defined as elements which can control the flow of electrons through them. They either increase or decrease the voltage. Here are some examples of passive elements.
Passive Circuit Elements
Fig.no.1: Passive Circuit elements.
Resistor: A resistor opposes the flow of current through it. For a linear circuit, Ohm's law is applicable, which states that voltage across the resistor is directly proportional to the current flowing through it, the proportional constant being the resistance.
Inductor: An inductor stores energy in form of the electromagnetic field. The voltage across an inductor is proportional to the rate of change of current flowing through it.
Capacitor: A capacitor stores energy in form of the electrostatic field. The voltage across a capacitor is proportional to the charge.