Mesh Analysis: Solving for Middle Loop Currents

[madchiller]

hello, while doing the mesh analysis what do you substract to what to get the current that is in the middle of two loops what is the rule to get i1 - i2 or i2 - i1 it depends on what ? thanks in advance for the help

 

[berkeman]

hello, while doing the mesh analysis what do you substract to what to get the current that is in the middle of two loops what is the rule to get i1 - i2 or i2 - i1 it depends on what ? thanks in advance for the help

You call it the same current. Only label the current in each leg once, and keep using that label for each equation that involves that element. Does that make sense?

 

[Adrenalineni]

Either way you do it, you make an assumption to which current is larger. If your answer is negative, your assumption was backwards.