The discussion focuses on the analysis of a first-order R-L circuit, specifically addressing the behavior of current at the moment a switch opens. Participants clarify that the current just before the switch opens is equal to the current just after it opens, which is crucial for solving the circuit analysis problem. The relationship governing this behavior is defined by the equation V = L(di/dt), which describes how inductance opposes changes in current. This understanding is essential for accurately analyzing the circuit's response.
PREREQUISITESElectrical engineering students, circuit designers, and anyone involved in analyzing R-L circuits and their transient responses.
It isn't exactly a related equation but I couldn't leave it empty so I put it there, i have attempted a solution on my own, but my question is just if the current at the instant before the switch opens=the current at the instant right after the switch opens. I just want to know if that's correct or not because it's relevant if I want to continue solving the rest of the question with my solution.BvU said:
Okay, my professor's lecture was very confusing and didn't properly explain initial conditions, but now I used outside sources to study and my confusion about the question is cleared so I'll delete this in a bit.BvU said:
You have picked up the essential part of this exercise: the inductance will behave in such a way that a change in current is counter-acted, according to the relationship $$V = L{di\over dt}$$so: bravo, well done !Xiao Xiao said: