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First Law of Faraday’s Electromagnetic Induction state that whenever a conductor are placed in a varying magnetic field emf are induced which is called induced emf, if the conductor circuit are closed current are also induced which is called induced current. Second Law of Faraday’s Electromagnetic Induction state that the induced emf is equal to the rate of change of flux linkages (flux linkages is the product of turns, n of the coil and the flux associated with it).
Where negative sign represents the direction of the induced current in the conductor will be such that the magnetic field  produced by it will opposit to cause produce it. This entry was posted in Degree, High School, Plus Two, Technical and tagged FARADAY'S LAW'S EXPLANATION, Faraday's law's of Electromagnetic induction, FIRST LAW, SECOND LAW by sree. UStudy aims to provide Educational Content for Polytechnic College students based on the latest K Scheme syllabus of Tamil Nadu.
Suppose a coil has N turns and flu linking the coil increses from 1 to 2 weber in 't' seconds.
Electromagnetic induction is the production of voltage across a conductor situated in a changing magnetic field or a conductor moving through a stationary magnetic field. Copyright © 2008 Lakshmi Anand K, Director of MSPVL Polytechnic College, Pavoorchatram. Quality is never an accident; it is always the result of high intention, sincere efforts, intelligent direction and wise choice of alternatives and skillful execution. In 1831, Michael Faraday, an English physicist gave one of the most basic laws of electromagnetism called Faraday's law of electromagnetic induction. In this experiment, Faraday takes a magnet and a coil and connects a galvanometer across the coil.


CONCLUSION: From this experiment, Faraday concluded that whenever there is relative motion between conductor and a magnetic field, the flux linkage with a coil changes and this change in flux induces a voltage across a coil. Any change in the magnetic field of a coil of wire will cause an emf to be induced in the coil.
It states that the magnitude of emf induced in the coil is equal to the rate of change of flux that linkages with the coil. But according to Faraday's law of electromagnetic induction, the rate of change of flux linkage is equal to induced emf. This law explains the working principle of most of theelectrical motors, generators, electrical transformers and inductors . At starting, the magnet is at rest, so there is no deflection in the galvanometer i.e needle of galvanometer is at the center or zero position. This emf induced is called induced emf and if the conductor circuit is closed, the current will also circulate through the circuit and this current is called induced current.
The flux linkage of the coil is the product of number of turns in the coil and flux associated with the coil. When a magnetic field is applied to electrically insulated pipe in which conducting fluids are flowing, then according to Faraday's law, an electromotive force is induced in it. When the magnet is moved towards the coil, the needle of galvanometer deflects in one direction.
When current flows through the coil of copper wire placed below a cooking container, it produces a changing magnetic field.


When the magnet is held stationary at that position, the needle of galvanometer returns back to zero position. This alternating or changing magnetic field induces an emf and hence the current in the conductive container, and we know that flow of current always produces heat in it. Here is the official description for Faraday's Electromagnetic Lab: Play with a bar magnet and coils to learn about FARADAY's law.
During this experiment, he found how emf is induced in the coil when flux linked with it changes. Now when the magnet is moved away from the coil, there is some deflection in the needle but in opposite direction and again when the magnet becomes stationary, at that point with respect to coil, the needle of the galvanometer returns back to the zero position. Similarly, if magnet is held stationary and the coil is moved away and towards the magnet, the galvanometer shows deflection in similar manner. It is also seen that, the faster the change in the magnetic field, the greater will be the induced emf or voltage in the coil. View the magnetic field lines or use a meter to show the direction and magnitude of the current.



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