Mesh Analysis -- (4 meshes) 1. The problem statement, all variables and given/known data http://img185.imageshack.us/img185/1541/screenshot01ly9.jpg [Broken] 2. Relevant equations V=IR KVL 3. The attempt at a solution Loop 1 is the top left loop. Loop 2 is the top right loop. Loop 3 is the bottom right loop. Loop 4 is the bottom left loop. (Think of the quadrants in the cartesian coordinate system... thats my loop and loop currents). Loop currents are going in the CW direction. For Loop 1: -14 + I_1 + (I_1 - I_2) + (I_1 - I_4) = 0 For Loop 2: I_2 = 2mA For Loop 3 & 4: Since they are super meshes because of the shared current source... this is what I have: 4mA = I_3 - I_4 -- and -- using the supermesh idea, and short-circuiting the shared 4mA current source... I4 + 2*I3 + I3 + I4 = 0... which is 3I_3 + 2I_4 = 0 Is my setup correct? If so, this is what I did... solved for I_4 in the equation 3I_3 + 2I_4 = 0... I_4 = (-3I_3) / 2 I plugged that I_4 into the eq. 4mA = I_3 - I_4... and I got I_3 = 2mA. I assumed I_0, what we're trying to find, is equal to I_3. Is this a valid assumption since the current is going around that mesh?