what is the theoretical explanaton for the current lead in capacitor?

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  • #10611
    admin
    Keymaster

    we all know that current in a pure capacitor leads the voltage applied to it by 90 degrees.can u find out the theoretical basis behind it?

    #12455
    jaymez83
    Participant

    When you first turn on the power in a capacitive circuit, the capacitor acts like a short circuit. Current rushes in at maximum rate, then gradually decreases as the capacitor charges.

    While this is happening, the voltage across the capacitor slowly rises, from zero to max. At full charge, the capacitor acts like an open circuit. Current is zero and voltage is at its maximum.

    So I can be said that voltage lags the current by 90′

    #12457
    Vidhyut S.
    Participant

    Absolutely right….

    #12458
    admin
    Keymaster

    Vidhyut S. said:

    Absolutely right….


    thats ok but iamasking the theoretical basis i.e basedon the polarisation process.

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