Choosing Independent Loop Currents

If the network is planar, then probably the simplest choice is to:
  • let one of the loop currents be inside each of the meshes of the network
  • let all of the loop currents be in the same direction (either all clockwise or all counter-clockwise)



This choice is called the mesh current method. An example is shown to the right.






Other choices are possible. Another one is shown to the right.
The only restrictions on choice of loops are:
  • Every branch of the circuit must be included.
  • It must be possible for the current in any branch to take on any value, restricted only by Kirchhoff's Current Law.
 

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