KVL and KCL || Kirchhoff's Laws ( KCL & KVL) || IN BENGALI

Описание: Kirchhoff's Laws ( KCL & KVL):
His law is also called Kirchhoff's first law, Kirchhoff's point rule, or Kirchhoff's junction rule (or nodal rule).
This law states that, for any node (junction) in an electrical circuit, the sum of currents flowing into that node is equal to the sum of currents flowing out of that node; or equivalently:
The algebraic sum of currents in a network of conductors meeting at a point is zero.
This law is also called Kirchhoff's second law, Kirchhoff's loop (or mesh) rule, and Kirchhoff's second rule.
This law states that......
The directed sum of the potential differences (voltages) around any closed loop is zero.
Limitations
Kirchhoff's circuit laws are the result of the lumped element model and both depend on the model being applicable to the circuit in question. When the model is not applicable, the laws do not apply.
The current law is dependent on the assumption that the net charge in any wire, junction or lumped component is constant. Whenever the electric field between parts of the circuit is non-negligible, such as when two wires are capacitively coupled, this may not be the case. This occurs in high-frequency AC circuits, where the lumped element model is no longer applicable.[4] For example, in a transmission line, the charge density in the conductor will constantly be oscillating.
In a transmission line, the net charge in different parts of the conductor changes with time. In the direct physical sense, this violates KCL.
On the other hand, the voltage law relies on the fact that the action of time-varying magnetic fields are confined to individual components, such as inductors. In reality, the induced electric field produced by an inductor is not confined, but the leaked fields are often negligible.
UMESH GHOSH
VOCATIONAL TRAINER ELECTRONICS (CSS-VSE)
DEYPARA BISHNUPUR HIGH SCHOOL,NADIA.
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