1. PF Contest - Win "Conquering the Physics GRE" book! Click Here to Enter
    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!

Mesh analysis help please

  1. Mar 7, 2014 #1
    1. The problem statement, all variables and given/known data


    Basically, I have to learn about mesh analysis and have been given a circuit from which I am meant to find the equations to find the currents through each load in the system. Thing is, I am not sure whether my loops for solving the circuit are correct. Would someone be able to advise as to whether the loops I have drawn on the circuit are correct or not? Also for one part of the circuit, could someone give me some advice as to how I would go about solving as I have no clue?

    Many Thanks

    2. Relevant equations

    3. The attempt at a solution

    See attached image

    Attached Files:

  2. jcsd
  3. Mar 7, 2014 #2


    User Avatar
    Gold Member

    This is a very poor description of what you have tried. Try a physically larger (readable!) diagram, which clear labels on your loops and less clutter. I strongly suggest redrawing it so that all the ground nodes are joined together at the bottom of the diagram instead of being all over the place.

    While you are doing that, give some thought as to why you have just completely ignored part of the circuit when you drew your loops.
  4. Mar 7, 2014 #3


    User Avatar

    Staff: Mentor

    Hint: You need to be a bit careful with this one due to the several ground symbols that seem to leave two of the loops open-ended. They actually imply a "hidden" loop...which will become obvious if you follow phinds' suggestion.

    The ground symbol indicates a common point of reference (connection) so it's fair game to replace them with wires that connect them all together to make the 'virtual' connections visible.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted