Displacement Current
1. Displacement current is an electric current created by a time-varying electric field rather than by moving charges.
2. Displacement current is a phenomenon analogous to an ordinary electric current, posited to explain magnetic fields that are produced by changing electric fields.
The magnetic field is produced in the surroundings of the electric current (conduction current). Since the electric current might be in the steady-state or varying state. The concept displacement current depends on the variation of time of the electric field E, developed by the British physicist James Clerk Maxwell in the 19th century. He proved that the displacement current is another kind of current, proportional to the rate of change of electric fields and also explained mathematically. Let’s discuss the displacement current formula and necessity in this article.
The displacement current is defined as, the type of current produced due to the rate of electric displacement field D. It is a time-varying quantity introduced in Maxwell’s equations. It is explained in the units of the density of electric current. It is introduced in the law of Ampere circuits.
The SI unit of displacement current is Ampere (Amp). The dimension of this can be measured in the unit of length, which can be the max, min or equal to the actual distance traveled from an initial point to endpoint.
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