What is the need of displacement current
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It only adds to current density in Ampere's circuital law. As it produces magnetic field so it is called a current. ... The magnitude of displacement current is equal to the rate of displacement of charge from one plate to other plate of a capacitor. 4.
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In electromagnetism, displacement current is a quantity appearing in Maxwell's equations that is defined in terms of the rate of change of electricdisplacement field. Displacement current has the units of electric current density, and it has an associatedmagnetic field just as actual currents do.
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