1. Limited time only! Sign up for a free 30min personal 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!

Complex periodic waves

  1. Sep 9, 2013 #1
    1. The problem statement, all variables and given/known data

    Could you please help me to start this question????

    Calculate the properties of complex periodic waves.

    A 100Ω resistor is connected in series with a 2 uF capacitor and a 20 mH inductor. The voltage
    1 sin 5000t+0.5 sin 1000t V is applied across the circuit.

    1. the effective ( rms) voltage
    2. the effective (rms) current
    3. the true power
    4. the power factor

    Thank you!

    2. Relevant equations

    3. The attempt at a solution
  2. jcsd
  3. Sep 9, 2013 #2


    User Avatar

    Staff: Mentor

    How do you think you should approach this problem? Have you been studying phasors in this class? Or are you supposed to use differential equations to do the calculations?

    If you have been studing phasors, what are the impedances of each of the 3 components?

    What is the equation that defines the power factor of a circuit?
  4. Sep 10, 2013 #3
    I have been studying away from college cause im working. Its hard subject, specially if english is not your first language.
    Its always difficult to start the question, cause you need to know what they are asking you to do.

    The simple equation for power factor: PF= R/ Z
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted