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What are the SI units of reactance and i...

What are the SI units of reactance and impedance in a.c. circuit ?

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SI unit of reactance and impedance of a.c. circuit is same viz. ohm.
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Knowledge Check

  • A variable capacitor is connected to an ac source. What effect does decreasing the capacitance have on the reactance and current in this circuit?

    A
    Reactance - No change , Current - No change
    B
    Reactance - Decreases , Current - No change
    C
    Reactance - Increases , Current - Increases
    D
    Reactance - Increases , Current - Decreases

  • The capacitive reactance in an A.C. circuit is

    A
    effective resistance due to capacitor
    B
    effective wattage
    C
    effective voltage
    D
    none of the above

  • A series AC circuit has a resistance of 4omega and an inductor of reactance 3omega . The impedance of the circuit is z_1 . Now a capacitor of reactance 6omega is connected in the series of above combination, the impedance becomes z_(2) , Then (z_(1))/(z_(2)) will be-

    A
    `1 : 1`
    B
    `5 : 4`
    C
    `4 : 5`
    D
    `2R, Rsqrt(3)`

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    What is the value of capacitive reactance (X_(C)) in DC circuits ?

    An a.c. source of variable angular frequency o is connected to an LCR series circuit. Which one of the following graphs correctly represents variation of impedance Zof a.c. circuit with angular frequency omega ?

    the impedance Z in an AC circuit is given by

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