Electric Potential And Potential Difference
Chapter Name : Electricity |
Sub Topic Code : 101_10_12_02_01 |
Topic Name : Electric Potential And Potential Difference |
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Sub Topic Name : Electric Potential And Potential Difference |
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Introduction
Meaning of potential and potential difference in daily life and in electricity, concept of battery, mathematical representation of potential difference in Physics, measuring potential difference.
Pre-Requisites:
Concept of Charge and Current.
Activity:
A battery around you. It utilizes the potential difference between its terminals when it is connected in a circuit. A potential difference always exists between its terminals.
Real Life Question:
Why does lightning take place?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Electric Potential Electric Potential Difference | Electric Potential It is the ability or capacity to move something. Here, in Physics that something is charge which results in current. It is the difference in electric potentials between 2 points and is calculated by finding the work done to move 1 coulomb of charge from one point to another. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| Battery | Plug the battery in electrical equipment and see how potential difference between its terminals causes current to flow and makes the equipment work. |
Real life uses :
Can be used to calculate the amount of current and other parameters in a circuit if you know the potential difference between two points.
Places to visit :
Physics laboratory of your school.
Practical examples around us
| Examples | Explainations |
|---|---|
| The lighting during a thunderstorm. | The unbalanced electric charge in atmosphere creates a potential difference and results in lightning. |
What you learn in Theory:
Meaning of word potential and potential difference in daily life as well as in electricity and how to calculate potential difference between two points.
What you learn in Practice:
Potential difference between 2 points leads to current flow which is how our electrical equipment work.