Question

Describe the two laws of Kirchhoff’s and the Faraday law with graphs

Answer 1

There are two laws of Kirchhoff.

1) Kirchhoff's current law (KCL)

2) Kirchhoff's Voltage law (KVL)

Kirchhoff's current Law (KCL)- It states that “sum of currents entering at any node is equal to the sum of currents leaving that node in any circuit” , or in other words we can say that “sum of all the currents at any node is equal to zero in any circuit.” This law is basically derived from the law of conservation of charges i.e. “charges can neither be created nor be destroyed.”

Kirchhoff's Voltage Law (KVL)- It states that “sum of all the voltages & all the voltages drops in any close loop is equal to zero in any circuit.” This law is basically derived from the law of conservation of energy i.e. “energy can neither be created nor be destroyed.”

Faradey law:

It explains the relationship between electric circuit and magnetic field. This law is the basic working principle of the most of the electrical motors, generators, transformers, inductors etc.

Faraday's First Law:

Whenever a conductor is placed in a varying magnetic field an EMF gets induced across the conductor (called as induced emf), and if the conductor is a closed circuit then induced current flows through it.
Magnetic field can be varied by various methods -
1. By moving magnet
2. By moving the coil
3. By rotating the coil relative to magnetic field

Faraday's Second Law:

Faraday's second law of electromagnetic induction states that, the magnitude of induced emf is equal to the rate of change of flux linkages with the coil. The flux linkages is the product of number of turnsand the flux associated with the coil.