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!

Homework Help: Circuit with capacitors

  1. Jan 6, 2016 #1
    1. The problem statement, all variables and given/known data
    Wire up a circuit with C3 in parallel with C1 and C2 in series. You will need to measure the current arriving at the capacitors (before they are fully charged) and the voltage across capacitor C2.

    3. The attempt at a solution
    I'm not sure if I'm measuring the current before the capacitors are fully charged. Can anyone help me?

    Attached Files:

  2. jcsd
  3. Jan 6, 2016 #2


    User Avatar
    Homework Helper
    Gold Member

    What are the component values? No resistors in the circuit? The capacitors will be charged instantly then.Are you sure you are asked to find the current and not the charge?
  4. Jan 6, 2016 #3
    no, there are no resistor. that are all the instructions I have.
  5. Jan 6, 2016 #4


    User Avatar
    Homework Helper
    Gold Member

    Then I think you are asked to find the charge arriving on each capacitor. This is a dc circuit containing capacitors. Since there is no resistance involved, all the capacitors will be charged instantly,hence the current will cease instantly. You can find the charge in terms of C1, C2, C3 and voltage V.
  6. Jan 6, 2016 #5


    User Avatar

    Staff: Mentor

    Is this in preparation for an actual experiment using wires, etc., or is this for a computer simulation, or is it some sort of thought exercise?

    The typical meter is very limited in what it can reveal about a fast-changing current or voltage, other means may be needed.
  7. Jan 7, 2016 #6


    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    Is the page of text to the left of your sketch circuit related to the question? Perhaps you could post that?

    Does your current meter have a "peak hold" feature?
  8. Jan 7, 2016 #7
    thank you everybody but my draw was correct eventually :) It was just an online exercise where I had to drag and drop the capacitors and voltmeter in the right place.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted