DC current through capacitor and inductor...

satty lavanya

satty lavanya

@satty-lavanya-4IoUgk • Oct 14, 2024
HI FRIENDS...... i had a doubt ...what happens when a dc current flows through capacitor and inductor?
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  • Jeffrey Arulraj

    Jeffrey Arulraj

    @jeffrey-xA7lUP • Jun 28, 2013

    DC is blocked by capacitor and Inductor is short circuited in DC

    PS: Pls refer some books given in reference books thread in Electronics and Electrical section
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  • satty lavanya

    satty lavanya

    @satty-lavanya-4IoUgk • Jun 28, 2013

    Conqueror
    DC is blocked by capacitor and Inductor is short circuited in DC

    PS: Pls refer some books given in reference books thread in Electronics and Electrical section
    can u say.me in detail........
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  • Jeffrey Arulraj

    Jeffrey Arulraj

    @jeffrey-xA7lUP • Jun 28, 2013

    You must know that impedance of a capacitor is inversely proportional to the frequency of the message signal

    Xc=1/jwC

    and when f=0 Xc=infinity

    Also in inductor Xl= jwL

    and when f=0 Xl= 0

    You know that if impedance is infinity the resistance is very high and if impedance is 0 we have a short circuit
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  • satty lavanya

    satty lavanya

    @satty-lavanya-4IoUgk • Jun 28, 2013

    Conqueror
    You must know that impedance of a capacitor is inversely proportional to the frequency of the message signal

    Xc=1/jwC

    and when f=0 Xc=infinity

    Also in inductor Xl= jwL

    and when f=0 Xl= 0

    You know that if impedance is infinity the resistance is very high and if impedance is 0 we have a short circuit
    my doubt was.....see in the case of dc current f=0.as f=1/t i.e as f=0 t=infinity .so now consider by these equations....i=c.dv/dt and v=-Ldi/dt now explain those statements please...
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  • Jeffrey Arulraj

    Jeffrey Arulraj

    @jeffrey-xA7lUP • Jun 28, 2013

    That is really a great assumption here Friend

    But don't you think resistance plays a role when current flows through a conductor

    All I explained was using impedance of capacitor and inductor not the voltage and current rating


    PS: Pls note that for a small change in time is never assumed to be infinity in any of the equations u quoted here

    dt = a small period of time not the total time in which the inductor or capacitor is charged or excited
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