For the record: even most power systems specialized electrical engineers don’t have an intuitive understanding of what’s going on with power factor and reactive power, at least right out of college or in their early careers. They learn the math and know what they need to *do* with it, but most wouldn’t answer this question very well until after working with it for years in real applications.
I think the top post is as good an analogy as I’ve seen. But all analogies are lacking, because there’s no other mechanic for comparison where oscillation has to happen on two dimensions for power to transfer.
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