Types Of Charges And Their Interaction
Chapter Name : Some Natural Phenomena |
Sub Topic Code : 101_08_15_03_01 |
Topic Name : Types Of Charges And Their Interaction |
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Sub Topic Name : Types Of Charges And Their Interaction |
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Introduction
When two objects are rubbed, they acquire some charge. Which may either be negative or positive.
Pre-Requisites:
Introduction to charging by rubbing.
Activity:
Rub a plastic refill and a balloon with polythene, Bring a charged balloon near the charged refill and a charged refill near to another charged refill. Record the observation.
Real Life Question:
“Why does a charged balloon repel another charged balloon when brought near?”
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Types of charges | When an object is rubbed with another object, it receives some charges, and another object receives opposite charges. This may be attraction of repulsion type. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| A balloon, comb, paper pieces, refill | All these objects can be charged by rubbing. |
Real life uses :
To produce charges in the body, lightning.
Places to visit :
You have enough materials at home to understand the science behind it. Like, comb, pieces of paper, balloon, refill, plastic, polythene etc.
Practical examples around us
| Examples | Explainations |
|---|---|
| Eraser and wool | Rub the eraser with wool, and find does eraser attract the pieces of paper? |
What you learn in Theory:
When two objects are rubbed with each other, they acquire charge. This charge may be of two types, positive and negative.
What you learn in Practice:
There are two types of charges in the nature, positive and negative. And like charges repel each other and unlike charges attract each other.