Capacitors and Inductors

Discussion in 'Homework Help' started by Hello, Mar 21, 2009.

  1. Hello

    Thread Starter Active Member

    Dec 18, 2008
    82
    0
    Can you please have a look at Q3 part (i) in the attached file, as i am not sure if my answer is correct: V=IZ=I(Xc+XL)

    Any help is appreciated.
     
  2. recca02

    Senior Member

    Apr 2, 2007
    1,211
    0
    Did you forget to attach the file?
     
  3. Hello

    Thread Starter Active Member

    Dec 18, 2008
    82
    0
    Yes, sorry.
     
  4. Hello

    Thread Starter Active Member

    Dec 18, 2008
    82
    0
    This is the file.
     
  5. recca02

    Senior Member

    Apr 2, 2007
    1,211
    0
    The question (Q 3 i ) reads
    Write expressions relating current and voltage for a capacitor and an inductor.
    So going by that it should be
    I*Xc=V and I*Xl =V.
    you can also replace Xl = 2pi* frequency*L
    and Xc= 1/(2pi*Frequency*c)

    If you really want to use the given ckt dia. then you can always find the current using I = V/Z

    hope this helps.
     
  6. Hello

    Thread Starter Active Member

    Dec 18, 2008
    82
    0
    Can you not write the expression as: V=IZ=I(Xc+XL) ?!
     
  7. recca02

    Senior Member

    Apr 2, 2007
    1,211
    0
    That would be an expression relating current through and voltage across capacitor and inductor in series combination not expressions relating current and voltage for a capacitor and an inductor.
     
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