Application of Electromagnetic Induction - LP

       

Many useful devices are built using the principle of  electromagnetic induction. Two of the most important devices that use this principle are the generator and transformer.


This lesson is designed to help students understand the fundamental application of electromagnetic induction.


OBJECTIVES:
  Given varied activities, students, with 80% proficiency will be able to:
     a. Explain how an electric generator and transformer work.
     b. Illustrate a model of generator and transformer.
     c. Give the importance of generator and transformer to human advancement.

MATERIALS:
     PhET Interactive Simulation, projector, laptop

REFERENCES:
     Alumaga, Marie Jessica et. al., "Science and Technology Grade 10", pp. 149-150
     Acosta, Herma et. al., "Science Learner's Material", pp. 87-91

PROCEDURE:
1. The teacher will utilize PhET simulation entitled "Faraday's Law".
2. In the simulation the teacher will move the magnet through the coil and afterwards may ask the students this question:

What have you observed when the magnet was moved through the coil?

3. The teacher will continue to move the magnet but this time the motion of the magnet should be continuous. After that the teacher may ask the students:

       What have you noticed about the current when the magnet was continuously moved?

 (This will serve as introduction to the lesson)

 4. The class will be divided into 4-5 groups. (Maximum of 5 persons per group). The task of the students in this part is to dram/illustrate a simple generator based on their prior knowledge about electromagnetism. Each group will then select one representative to present their work. After the presentation of the last illustration, the teacher will then assess each work by integrating the lesson's input.