This document discusses electromagnetic induction. It provides objectives to develop knowledge of electromagnetic induction and identify related terms. Key terms discussed include electromagnetic induction, induced EMF, alternating current, direct current, magnetic flux, self induction and mutual induction. Facts provided include that magnetic flux is the product of magnetic field and area, and electromagnetic induction was discovered by Faraday and Henry in 1831. The document also includes a concept map and related examples of electromagnetic induction applications and devices like generators, motors and transformers.

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

3. Process of electromagnetic induction
Applications of electromagnetic induction
structure of DC generator

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