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!

PHYSICS LAB HELP - RC circuit

Tags:
  1. Oct 12, 2014 #1
    • Warning! Posting template must be used for homework questions.
    Consider a series RC circuit with an
    R = 3.0 Ω
    and a capacitance of 12 µF being charged to a voltage of 5.0 V. (Note, you will not include units in your answers.)

    If you wished the charging of this capacitor to have a vertical displacement of 4.0 DIV from 0 charge to fully charged, what value must you set the vertical gain on the oscilloscope to achieve this?
    - FOUND THIS ONE: 1.25 V/DIV

    What is the value of the horizontal sweep that you would need to use if you wished the characteristic time constant of this circuit to span 2.0 DIV on the oscilloscope screen?

    -LOST HERE.

    So i am having trouble understanding the last part and am down to one try...we are also doing this lab BEFORE having covered this in lecture soo im kinda lost....
     
  2. jcsd
  3. Oct 12, 2014 #2

    mfb

    User Avatar
    2016 Award

    Staff: Mentor

    Look up characteristic time for an RC circuit. It is a simple formula, use it and the second part is very similar to the first part.
     
  4. Oct 12, 2014 #3
    I tried looking this up but am not sure what you mean?

    Again we just started RC Circuits so im a little lost..
     
  5. Oct 13, 2014 #4

    andrevdh

    User Avatar
    Homework Helper

    The characteristic time is related to the time constant of the RC circuit.
     
  6. Oct 16, 2014 #5
    thanks!
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted



Similar Discussions: PHYSICS LAB HELP - RC circuit
  1. Physics Lab Help (Replies: 10)

  2. Help with physics lab? (Replies: 1)

Loading...