Permanent Magnets And Electromagnets
Chapter Name : Magnetism And Matter |
Sub Topic Code : 101_12_05_07_01 |
Topic Name : Permanent Magnets And Electromagnets |
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Sub Topic Name : Permanent Magnets And Electromagnets |
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Introduction
Magnetism is a class of physical phenomena that includes
forces exerted by magnets on other magnets.
Pre-Requisites:
Permanent magnets
Activity:
Different magnets are used
in our household like the magnet in our music system, television.
Real Life Question:
What are permanent magnets?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Permanent magnets | A good permanent magnet should produce a high magnetic field with a low mass, and should be stable against the influences which would demagnetize it. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| A magnet, needle. | It can be used to observe the magnetic property that attracts a needle. |
Real life uses :
To hold notes onto the refrigerator.
Places to visit :
Various electrical
appliances in our house.
Practical examples around us
| Examples | Explainations |
|---|---|
| Wrist watch | Use of magnet in the watch. |
What you learn in Theory:
Principle behind permanent magnets and electromagnets
What you learn in Practice:
Principle behind permanent magnets and electromagnets