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  Displacement Current – Definition, Maxwell’s Concept, Derivation, Equation, Physical Significance and Applications Introduction Displacement current is electromagnetic theory. It was introduced by the physicist James Clerk Maxwell to resolve a fundamental inconsistency in Ampere’s Circuital Law and to establish the complete set of Maxwell's equations. The concept of displacement current led to the prediction of electromagnetic waves and laid the foundation for modern communication technologies such as radio, television, radar, mobile phones, and wireless networks. Unlike conduction current, which involves the actual movement of electric charges through a conductor, displacement current arises due to a changing electric field. Although no physical charge carriers move through an insulating medium, the changing electric field produces magnetic effects similar to those produced by ordinary electric current. The introduction of displacement current unified electricity and m...