The Displacement Current

The Displacement Current is an important achievement in 19th century theoretical physics. James Clerk Maxwell applied the idea of induction to the area in between the capacitor plates in a charging (or discharging) circuit.  He found the changing flux acts like a current, a discovery that leads to later advances in both theory and technology.

Professor Lewin derives the displacement current term:

Here’s another, by Dr. Phys:

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About marcreif

I live and teach high school physics in the town I was born in, Fayetteville, Arkansas. My professional interests include modeling instruction and Advanced Placement courses. I also work as a College Board Workshop Consultant, which means I lead Pre-AP and AP Science Teacher workshops. Lately I've also been leading a fair amount of student review sessions for the National Math and Science Initiative. I have a website for students (fysicsfool.info) and another for AP Summer Institute participants (apsifool.info). I tweet infrequently (@marcreif).
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