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An electronic system, with closed loop current flow, and relative electrical potentials present across electrical components.

0 votes
4 answers
686 views

How to decide the direction of current in a LC circuit?

Suppose we have the following LC circuit set-up, where the current is assigned in the clock-wise direction: Now, we would like to use KVL to obtain the proper differential equation: $$L\frac{dI}{dt} …
5 votes
3 answers
1k views

Applying Kirchhoff Rule to an LC circuit

In a simple LC circuit (just one capacitor and one inductor), using the Kirchhoff rule has $$\frac{Q}{C} + L\frac{dI}{dt} = 0.$$ But isn't the voltage drop across an inductor $-L\frac{dI}{dt}$? What h …