Learn about electrical electronics, space science, science fact. We provide Right Education and Develop technical Skills only on Edu-Right

Science Fact

Space science

Electrical & Electronics

How To


Electromagnetic Induction fully based on two consecutive electromagnetic induction laws, these two laws are 

  1. Faraday's Electromagnetic Induction First Law
  2. Faraday's Electromagnetic Induction second Law
So, The First Question that arriving in your Mind is 

What do we understand by Electromagnetic Induction?

For Change in Magnetic field electromotive force (emf) is generated in the conductor. This electromotive force produces Electromagnetic Induction. This electromagnetic induction is produced mainly due to magnetic flux.

The Electromagnetic Force is 

e = N × (dΦ/dt)


e = Electromagnetic Force or voltage induced (measured in volts(v))

t = time (measured in seconds(s))

N = number of turns in the coil

Φ = magnetic flux (measured in Webers(w))

How Electromagnetic Induction Can be Generated?

Electromagnetic induction will be generated in 2 ways that, specifically once the electrical conductor is kept in an exceedingly moving magnetic flux and once the electrical conductor is consistently moving inside a static magnetic flux. The development of magnetic force induction was 1st discovered by Michael Faraday when he moved a magnet through an electrical coil. He noticed a modification within the voltage of the circuit. He later deduced the factors that might influence the electromagnetic induction because of the number of coils, the strength of the magnet, the dynamical magnetic fields and also the speed of relative motion between coil & magnet.

The number of turns within the coils/wire is directly proportional to the induced voltage. In different words, a larger voltage is generated once the quantity of turns is higher. The dynamical field of force also influences the voltage that is induced. The speed of the relative motion between the coil and magnet was conjointly found to have an effect on the induced voltage or electromagnetic induction as an increase in velocity cuts the lines of flux at a quicker rate. This ends up in additional induced electromagnetic force or voltage.


 Faraday's Laws of Electromagnetic Induction

Faraday's Laws depend on the electromagnetic property of any phenomenon.  This law is based on how a magnetic material interacts with other conducting material. These interactions or changes create Electromagnetic force and this process is known as electromagnetic induction. This law also follows the Lenz's lawThe magnetic field created by the induced current opposes the cause of his generate a magnetic field that is produced. Fleming’s right-hand rule can determine the direction of the flow of current.) 

Faraday's Electromagnetic Induction First Law

Any change within the magnetic flux of a coil of wire can cause a voltage to be induced within the coil. This electromotive force induced is termed induced voltage and if the conductor circuit is closed, the current also will flow into through the circuit and this current is termed induced current.

Method to alter the magnetic field:

  1. By moving a magnet towards or faraway from the coil.
  2. By moving the coil into or out of the magnetic flux.
  3. By dynamic the area of a coil placed within the magnetic flux.
  4. By rotating the coil relative to the magnet.

 Faraday's Electromagnetic Induction second Law

It states that the magnitude of electromotive force induced within the coil is up to the rate of change of flux that linkages with the coil. The flux linkage of the coil is that the product of the number of turns within the coil and flux related to the coil.

According To Faraday's laws

The Initial magnetic flux is = Φ1
The Final Magnetic Flux is = Φ2
the change in flux is = Φ2 - Φ1 = dΦ

e = Electromagnetic Force or voltage induced (measured in volts(v))

t = time (measured in seconds(s))

N = number of turns in the coil

Φ = magnetic flux (measured in Webers(w))

then the electromagnetic force is e = -N × (dΦ/dt)

No comments:

Post a Comment

Thank You!!

Bottom Ad [Post Page]

| Designed by Colorlib