right answer or no???

Discussion in 'Homework Help' started by voltron, Aug 27, 2009.

  1. voltron

    Thread Starter New Member

    Aug 21, 2009
    4
    0
    Hi, I'm stuck on this question where the answer has to be wrong and looking for some help. Here it is

    120 Volt 60 Hz series circuit,
    XL= 20 ohms
    R = 10 ohms
    C =60 microfarads
    Voltage drop of the coil?

    What I've done is

    Xc = 1/377*0.00006 =44.219
    Ztotal = sqrt(10^2 + (44.219 - 20)^2) =26.202
    I total = 120/26.202 = 4.58amps

    Voltage drop of coil = e=I*R so 4.58*20=91.6 volts

    But the answer is supposed to be 102.4 volts!
    Who's right here, its driving me nuts. thx
     
  2. mik3

    Senior Member

    Feb 4, 2008
    4,846
    63
    You are right.
     
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