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When using the Laplace transform in circuit analysis, the capacitive impedance is represented in the s domain by:

where C is the capacitance, and s (= σ+jω) is the complex frequency.

Kapasitor jeung arus nu pindah

The physicist James Clerk Maxwell invented the concept of displacement current, dD/dt, to maké Ampere's law consistent with conservation of charge in cases where charge is accumulating as in a capacitor. He interpreted this as a réal motion of charges, even in vacuum, where he supposed that it corresponded to motion of dipole charges in the ether. Although this interpretation has been abandoned, Maxwell's correction to Ampere's law remains valid.