Displacement Current

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Displacement current introduced by Maxwell accounts for changing:

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Maxwell realized that Ampere's Law was incomplete for varying fields (like inside a charging capacitor).
- He introduced the **Displacement Current** ($I_d$):
$I_d = \epsilon_0 \frac{d\Phi_E}{dt}$
- This represents the effect of a **changing electric field**, which produces a magnetic field just like a real conduction current. This 'current' exists in the insulating gap of the capacitor, ensuring continuity of the total current.

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Displacement Current

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