Electric Field
Chapter Name : Electric Charges And Fields |
Sub Topic Code : 101_12_01_08_03 |
Topic Name : Electric Field |
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Sub Topic Name : Physical Significance Of Electric Field |
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Introduction
We can easily calculate the force by coulomb’s law, and then is the concept of field necessary?
Pre-Requisites:
Knowledge about coulomb’s law and basic electric field.
Activity:
Find out the properties of electromagnetic waves in accelerated motion of charges.
Real Life Question:
In electric guitar, there is a magnet , which produces magnetic field and electric field as well, What will happen if don’t use magnet?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Electromagnetic field | A field in which both electric and magnetic waves are present. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| Magnetic compass | See the deflection in the compass, when it is kept beside a current carrying wire. |
Real life uses :
Microphones, Electric guitar, Hydro power plants etc.
Places to visit :
Your school physics lab, you can also refer to your text book for more knowledge.
Practical examples around us
| Examples | Explainations |
|---|---|
| Every system of charges present | In every system of charges present in the universe, there exists a field by charges, which affect force. |
What you learn in Theory:
Electric field produces electromagnetic waves when the charges accelerate. These electromagnetic waves carry energy.
What you learn in Practice:
Although electrical field is not of much importance in static charges but it plays an important role when charges are in accelerated motion.