This is a very complex idea, oten badly explained, even by lecturers at university.
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Displacement current is a theoretical mathematical term used originally ?to explain how current can flow into a capacitor and out the other side despite there being no conductor between the capacitor's plates - nothing to carry the current.?
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If you are studying radiophysics, especially Maxwell's equations (essential for a proper understanding) you will come across this term.? Unfortunately, proper understanding requires knowledge of tensor calculus, usually a third year university topic.? Some people throw the term about without a proper understanding.
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When we first learn about electric current, we tend to think of current in wires causing radio waves.? Inf act, its the other way around, even for DC.? Not an easy concept to get your head around.
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Some good definitions and history of the concept:
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A bit of ordinary calculaus
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And some tensor calculus
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Hope this helps
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John
kmmath@... wrote:
I have never heard the term "displacement" current. Perhaps somebody else in this forum has and can answer your question.
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Hi. I am new to this group and this is my first question? What
is "displacement current"? Is it electron current?
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