- Joined Oct 17, 2015
for L1 Something like this? (−I1R+Va−V1).In your equation for I1, you have (Va-V1), but that is NOT the voltage across the inductor. Va is the voltage at the top-left node relative to the bottom-left node. You need the voltage at the top-left node relative to your chosen common. You are correct in your supposition that you need to get R1 involved somehow. What is the voltage at the bottom-left node relative to your common in terms of R and I1?