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!

Electricity and Kirchhoff's Laws

  1. Sep 29, 2012 #1
    1. The problem statement, all variables and given/known data

    Given two batteries in parallel, one of 10V and 5Ω, and the other of 5V and 2Ω, which is attached to a 3Ω resistor, find the current that flows from the 10V battery, if the system described above is connected to a 20 resistor.

    2. Relevant equations

    Kirchhoff's two laws : (1) Current entering a junction = current leaving junction, (2) Algebraic sum of emfs = sum of all potential drops;

    V = IR

    3. The attempt at a solution

    I think I used the laws correctly, and ended up with a final answer of 1.56 A. My attempt is attached below (the 2nd photo).

    Thing is, I'm not sure if this is correct...
     

    Attached Files:

  2. jcsd
  3. Sep 29, 2012 #2

    gneill

    User Avatar

    Staff: Mentor

    Your solution looks fine.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Electricity and Kirchhoff's Laws
  1. Kirchhoff's Laws (Replies: 2)

  2. Kirchhoff's law (Replies: 22)

  3. Kirchhoff laws (Replies: 9)

  4. Kirchhoff's Laws (Replies: 4)

Loading...