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What is the reactance of a capacitor connected to a constant `DC` source?

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Knowledge Check

  • Which of the following is true for an ideal capacitor connected to a sinusoidal voltage source ?

    A
    Neither the average power nor the average current is zero
    B
    Average current is zero but not the average power
    C
    The average power is zero, but not the average current
    D
    Both the average power and average current are zero

  • When a parallel plate capacitor is connected to a source of constant potential difference

    A
    all the charge drawn from source is stored in the capacitor
    B
    the potential difference across capacitor grows very rapidly initially and this rate decreases to zero eventually
    C
    only half of the energy drawn from the source is dissipated outside the capacitor
    D
    all of these

  • The inductance of a coil is 10 H. What is the ratio of its reactance when it is connected first to an A.C. source and then to a D.C. source?

    A
    10
    B
    0
    C
    `oo`
    D
    `0.5`

    • Similar Questions

    Explore conceptually related problems

    Calculate the reactance of 10 m H inductor connected to an AC source with frequency of 100 Hz.

    The figure shows the graphical variation of the reactance of a capacitor with frequency of ac source. (a) find the capacitance of the capacitor (b)an ideal inductor has the same reactance at 100 Hz frequency as the capacitor has the same frequency find the value of the inductor. (c) draw the graph showing the variation of the reactance of this inductor with frequency

    What would be the equivalent reactance of a capacitor and inductor when these are connected to a DC source ?

    A capacitor has some dielectric between its plates, and the capacitor is connected to a DC source. The battery is now disconnected and then the dielectric is removed. State whether the capacitance, the energy stored in it, electric field, charge stored and the voltage will increase ro remain constant.

    A parallel plate capacitor is first connected to a constant voltage source. It is then disconnected and ·then immersed in a liqnid dielectric, then:

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