Chapter 69 of 2363 min read
Displacement current and Maxwell's equations (qualitative)
Why this is asked: Displacement current isn't an actual flow of charge — it's the term Maxwell added so Ampère's law gives a consistent answer for any surface, and the textbook example is a charging capacitor's gap, where conduction current is zero but displacement current isn't.
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- •A parallel plate capacitor made of circular plates is being charged such that the surface charge density on its plates is increasing at a constant rate with time. The magnetic field arising due to the displacement current is:
- •A parallel plate capacitor is charged by connecting it to a battery through a resistor. If is the current in the circuit, then in the gap between the plates:
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