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View Full Version : Holy current, how do you find the the current at each ammeter?!?!


hamburgler
Mar24-08, 09:43 PM
1. The problem statement, all variables and given/known data
Find the current at each ammeter.

http://i289.photobucket.com/albums/ll223/hamburgler23/SYSTEM.png
My solution
Someone told me to use
\sumE-\sumIR=0
to solve the system but they weren't sure.

But I cannot find anything about this on the internet and I'm freaking out!

Snazzy
Mar24-08, 09:46 PM
Use Kirchhoff's junction and loop laws.
The sum of the voltage differences around any closed loop equals to 0.
The current entering a junction equals the current exiting a junction.

Feldoh
Mar24-08, 11:47 PM
The person that told you to use:

\sum{E}-\sum{IR} = 0 is partially correct. You need to use that (it's called Kirchhoff's Loop Rule).

You also need to use Kirchhoff's junction rule \sum{i_{in}} = \sum{i_{out}}.

hamburgler
Mar24-08, 11:53 PM
thanks mates this helped a lot :approve: