Various HNC issues

Discussion in 'Homework Help' started by Jon_8067, Jan 20, 2009.

  1. Jon_8067

    Thread Starter New Member

    Jan 20, 2009
    1
    0
    I've only a few questions left on a HNC assignment and am stupmed for one reason.

    A voltage given by the expression v = 100sin314t + 50sin942t - 40sin1570t is applied to an impedance of (40 + j30)Ω

    What's required
    i) An expression for the instantaneous current flowing in the circuit
    iii) The effective rms current
    iv) The power supplied to the load

    Whats thrown me is the 40+j30.. if it was just 40Ω i could do it no problem..:(

    Also

    'i) An expression for the instantaneous current flowing in the circuit'

    Umm..? What? Aha..

    Help would be greatly appreciated. Thanks,
    Jon.
     
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