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hi e86.
Look at this LTSpice plot of a transformer showing a Loaded and Unloaded secondary.
[the L3 inductor represents the transformer primary, with no secondary load]
Basically a transformer primary with a unloaded secondary is just an inductor.
Thanks!
The reason that in L1, the current doesnt lag behind the voltage is beacuse the load in the secondary circuit is a resistor?
Meaning, if this load wasnt a resistor, but a capacitor or another inductor, we would have seen a 90 degrees shift between Vp and IL1?