1. E-CONTENT ANALYSIS ON ELECTROMAGNETIC INDUCTION
HOME
1. www.electromagneticinduction /electronics tutorials
2. www.allabout circutes.com-magnetism
3. www.electrical 4u.com/faraday law of electromagnetic induction
OBJECTIVE
To know the technological aspect of education
To identify different home address
To develop the knowledge of electromagnetic induction
To identify different terms related to the concept
CONCEPT MAP
2. TERMS
Electromagnetic induction, induced emf , alternating current, direct current, electric generator,
self induction , mutual induction , magnetic flux
FACTS
Magnetic flux is the product of the magnetic field and the area through which the
magnetic field passes
Electromagnetic induction is the principle behind the electric generator
Electromotive force across a conductor when it is exposed to a varying magnetic field
Electromagnetic induction was discovered independently by Michel faraday and Joseph
Henry in 1831
Electromagnetic induction is described mathematically by Faraday’s law of induction
CONCEPT
Electromagnetic induction is the process by which an emf is produced in a wire by a
changing magnetic flux
Alternating current is the electric current that rapidly reverses its direction
Induced current is the current produced by electromagnetic induction
Induced emf is the voltage produced by the electromagnetic induction
Magnetic flux it is the product of the magnetic field and the area through which the
magnetic field lines pass
Electromagnetic induction is the production of an electro motive force across a
conductor when it is exposed to a varying magnetic field
RELATED EXAMPLES
Electromagnetic induction
4. structure of AC generator
Structure of Electric motor
Electromagnetic induction in transformer
5. ( step up & step down)
SUMMERY
Electromagnetic induction was discovered independently by Michael Faraday and Joseph Henry
in 1831 Faraday explained electromagnetic induction using a concept he called lines of force.
However, scientists at the time widely rejected his theoretical ideas, mainly because they were
not formulated mathematically. An exception was Maxwell, who used Faraday's ideas as the
basis of his quantitative electromagnetic theory. In Maxwell's model, the time varying aspect of
electromagnetic induction is expressed as a differential equation which Oliver Heaviside
referred to as Faraday's law even though it is slightly different from Faraday's original
formulation and does not describe motional EMF
The EMF generated by Faraday's law of induction due to relative movement of a circuit and a
magnetic field is the phenomenon underlying electrical generators. When a permanent magnet
is moved relative to a conductor, or vice versa, an electromotive force is created. If the wire i s
connected through an electrical load, current will flow, and thus electrical energy is generated,
converting the mechanical energy of motion to electrical energy
