The term “electromagnetic” better called “magnetic induction” refers to a quite interesting term in the field of physics that primarily deals with successive production of “electromotive forces”. These forces are generated at the time with the consequent changes that are associated with the magnetic field and these forces are generated across the electric conductor. The first discovery induction has been made by an English scientist named Michael Faraday. He is basically known for his notable contributions in the field of “electromagnetism” as well as “electrochemistry”. More notably, he is also sometimes considered to be the “father of electricity”, because, with his experiments, he was able to derive an important theory that relates to the successive generation of electricity.

Definition of magnetic induction and its unit

The term “magnetic induction” is quite a common term in the field of physics. “Magnetic induction” can be defined as a property that caters to the temporary possession of significant properties of a magnet by just an ordinary piece of iron. This possession of magnetic properties into the piece of iron is basically due to the existence of another piece of magnet nearby.  The “S.I. unit or International system of units” for magnetic induction is known as “Tesla” and is denoted by the symbol “B”. The “CGS or centimetre-gram-second unit” for magnetic induction is the “gauss”  and is denoted by the symbol “G”. It is interesting to note that the term magnetic induction is also referred to as “magnetic flux density”.

How does magnetic induction work?

Magnetic induction occurs in a special situation when the field of magnetism moves relative to the electric conductor to one another and it happens that the conductor successively crosses the lines of forces that are generated by the magnetic field. It is noted that a certain amount of current is generated by the electromagnetic induction and it is also noted that with the faster movement of the present magnet, the rate of magnetic induction increases. In addition to these, the increase in the turns of the coils and the generated current by electromagnetic induction is greater. It is also noted that the current generated becomes greater with the incorporation of stronger magnets. This is how electromagnetic induction works. With the help of several experiments, a study has shown the lines of magnetic forces that are produced by the presence of magnets with the help of iron filings.

What is magnetic flux?

The term “magnetic flux” which is generally used in the field of electromagnetism caters to a component within the magnetic field. It is defined by a component that is measured through a surface associated with the magnetic field. More properly magnetic flux along a surface is defined as proportional with the amount of “field lines” that are passing along the surface. Magnetic flux is denoted by the symbols such as “ Φ or ΦB”. For example, if we have to derive the magnetic flux of a certain surface the formula will be as follows. The magnetic flux along with surface area A, which is a vector quantity then it will be measured as “ΦB=B⋅A=BAcosθ”, where “B” denotes the respective magnitude of the given magnetic field, “A” determines the given surface area, “θ” refers to the angle that is experienced between the lines of given magnetic field to the perpendicular area or the normal denoted by “A”.

Determination of the term (induced EMF or Electromotive Force)

Within a mentioned circuit, it is noted that the term “induced EMFor Electromotive Force” is defined by the success rate of changes that take place in the magnetic flux present within the circuit. It is to be noted that the EMF is successively induced when there is acknowledged the slightest change within the linkages of the influx. Moreover, it can be well said that EMF is basically the voltage that is produced by the battery or with the help of a magnetic field based on Faraday’s law. 

Faraday’s law of induction

Faraday’s law majorly supports in predicting the ways with which the given magnetic field will engage or be associated with the given electric circuit in order to effectively produce the EMF or “electromotive force”. It is quite fundamental as a principle for the operating of several devices such as solenoids, inductors, transformers, generators, various types of electric motors and many more. The units of EMF are measured in volts and the formula for Faraday’s law is EMF=−ΔΦΔ.

The formula of magnetic induction

The magnetic induction formula can be denoted by “EMF=−NΔΦΔt, EMF = − N Δ Φ Δ t”, where, the magnetic influx is determined by “Φ”, “B” is the given magnetic field, “A” refers to the area and “θ ” refers to the angle formed.

Conclusion

In concluding to study, it is well understood that an overview has been provided to the entire field of electromagnetism. In addition to these, basic terminologies are discussed that are associated with the approach of this study such as magnetic induction, magnetic induction units, as well as magnetic induction formula. Furthermore, terms such as magnetic flux, EMF, Faraday’s law of induction are explored for a better understanding of the topic.