Results 1 to 4 of 4

Thread: determine the current flowing thru an element

  1. #1
    Super Member bigwave's Avatar
    Joined
    Nov 2009
    From
    Wahiawa, Hawaii
    Posts
    681
    Thanks
    1

    Cool determine the current flowing thru an element

    determine the current flowing thru an element is the charge flow is given by:

    (a) $\displaystyle q(t) = (3t+8) mC$

    assume the way to do this is just

    $\displaystyle
    i= \frac{dq}{qt}=\frac{d}{dt} (3t+8)mC= \boxed{3mC}
    $

    assume we keep the same units for answer.
    there are 4 more of these
    just seeing if doing what should be.
    Follow Math Help Forum on Facebook and Google+

  2. #2
    A Plied Mathematician
    Joined
    Jun 2010
    From
    CT, USA
    Posts
    6,318
    Thanks
    7
    Awards
    2
    Looks good to me, except the units are incorrect. You should have some version of amps going on there for the current.
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Super Member bigwave's Avatar
    Joined
    Nov 2009
    From
    Wahiawa, Hawaii
    Posts
    681
    Thanks
    1

    Cool (b)

    oops... yes it should $\displaystyle 3m[A]$

    (b)
    $\displaystyle q(t) = (8t^2+4t-2)[C]$

    so thus for i

    $\displaystyle i=\frac{dq}{qt}=\frac{d}{dt} (8t^2+4t-2)C=(16t+4)[A]$
    Last edited by bigwave; Jan 6th 2011 at 11:35 AM. Reason: latex error
    Follow Math Help Forum on Facebook and Google+

  4. #4
    A Plied Mathematician
    Joined
    Jun 2010
    From
    CT, USA
    Posts
    6,318
    Thanks
    7
    Awards
    2
    Sure.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 5
    Last Post: Dec 22nd 2010, 04:10 PM
  2. Replies: 3
    Last Post: Mar 23rd 2010, 07:05 PM
  3. Determine the current
    Posted in the Advanced Applied Math Forum
    Replies: 3
    Last Post: Feb 20th 2009, 01:09 AM
  4. Determine the current
    Posted in the Advanced Applied Math Forum
    Replies: 3
    Last Post: Aug 28th 2008, 11:09 PM
  5. Replies: 3
    Last Post: Dec 2nd 2006, 05:42 PM

Search Tags


/mathhelpforum @mathhelpforum