Susan Brown
Hi Ethan,
There is one thing you are missing about what’s going with these circuits. (Don’t feel bad – it’s the most commonly-missed part of the exam!)
Look at the branch with the detector switch in it. When that switch is closed, it creates a special circumstance that we talked about in Unit 5.
Do you see what I’m talking about? Let me know! (If not, I’ll try to give you another hint.)