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: Finding various currents around the circuit

  1. Sep 4, 2012 #1
    1. The problem statement, all variables and given/known data
    I have attached the circuit diagram to this thread.
    V=12V, R1=2kΩ, R2=2.7kΩ, R3=1kΩ, R4=5.1kΩ.

    Find I1, I2, I3, I4, I5, I6. Find VA, VB, VC, VD.
    I just don't know how to apply kirchoff's law to find the current and the voltage. I don't expect to have all answered. If someone can explain how to find at least 1 current and 1 voltage across a resistor, i can try to find the rest. Thank you in advance.

    2. Relevant equations


    3. The attempt at a solution

    I1= v/R1=12/2Ω=0.006A
    I2= v/R2=12/2.7Ω=0.0044A
    I6=I1+I2 = 0.0104A

    Attached Files:

  2. jcsd
  3. Sep 4, 2012 #2


    User Avatar

    Staff: Mentor

    Hi captjackAV. http://img96.imageshack.us/img96/5725/red5e5etimes5e5e45e5e25.gif [Broken]

    Can you replace 2 of the parallel resistors with a single resistor? Simplify the circuit this way so you end up with something to which you can readily apply Ohm's Law.
    Last edited by a moderator: May 6, 2017
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook