- #1
arvindsharma
- 21
- 0
Is displacement current always equals to conduction current?if not then can anyone give me an example for it?if yes,then can anyone prove it?
Displacement current is a phenomenon in electromagnetism where a changing electric field can create a magnetic field, even in the absence of a current-carrying conductor. It is represented by the symbol Id and was first described by James Clerk Maxwell in his theory of electromagnetism.
The main difference between displacement current and conduction current is that conduction current is the flow of electric charge through a conductor, while displacement current is the change in electric flux through a surface. Conduction current is associated with the motion of electrons or ions, while displacement current is caused by a changing electric field.
Displacement current is included in Maxwell's equations as a correction term to Ampere's law, which describes the relationship between electric current and magnetic fields. This addition was necessary to accurately describe the behavior of electromagnetic waves and to maintain the principle of conservation of charge.
One example of displacement current is the charging of a capacitor. When a voltage is applied to the capacitor, the electric field between the plates changes and creates a displacement current, even though no actual current is flowing through the capacitor. This displacement current is responsible for the buildup of charge on the plates of the capacitor.
Displacement current has various practical applications, including in the operation of antennas, capacitors, and transformers. It is also a key concept in the generation and propagation of electromagnetic waves, which are used in communication systems. Additionally, displacement current is essential in the study and understanding of various phenomena in electromagnetism and plays a crucial role in the design of electronic devices.