1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Capacitors, Inductors ( finding current and resistance)

  1. Nov 4, 2012 #1
    1. The problem statement, all variables and given/known data

    Please check the attachment to see all the variables

    2. Relevant equations

    Xl=2*pi*f*l, Xc=1/2*pi*f*c, variation of ohms law

    3. The attempt at a solution

    Ok for 5) i found Xl & Xc, then i combined the resistances in parrallel and used ohms law to find I=v/r. My answer was I=19

    For 6) Im complete confused by the circuit, it dosnt make sence to me

    For 7) parallel resistor?
     

    Attached Files:

  2. jcsd
  3. Nov 4, 2012 #2
    Question 6 is a bit ambiguous. The total reactance of the circuit is made up of a capacitive part and an inductive part. The result Xl - Xc is usually referred to as 'the reactance' qualified by the word 'capacitive' of 'inductive' depending on which is the larger.

    Anyway in this case - I think it just means the reactance of the capacitor - which you've already calculated.

    Figure 12-2 makes no sense at all. There are 2 capacitors but 3 values given
    If we assume that one is missing from the drawing, it's probably the 10uF and it could be in parallel with the others, or in series.
    Only one configuration would give a value that's offered as an answer.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook