Introduction
Chapter Name : Electrostatic Potentials And Capacitance |
Sub Topic Code : 101_12_02_01_01 |
Topic Name : Introduction |
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Sub Topic Name : Introduction |
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Introduction
Sum of kinetic and potential energies remain conserved, these type of forces are called conservative forces.
Pre-Requisites:
Basic knowledge about forces and energy.
Activity:
Observe on what factors does the potential energy depend.
Real Life Question:
Why a arrow moves forward when bow string is stretched?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Electric potential energy | work done by an external force in moving charge q from one point to another in electric field. |
| Conservative forces | In these type of forces sum of potential and kinetic energies remain constant. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| A bow and string | Stretch it and release it to observe the change of potential energy into kinetic energy. |
Real life uses :
Gravitation, to determine the energy of a system,
Places to visit :
Your physics lab, or you have things at your home to see the science behind it, like a ball, spring etc.
Practical examples around us
| Examples | Explainations |
|---|---|
| Spring | Spring forces in nature are of conservative type. |
What you learn in Theory:
Sum of potential and kinetic energy remains conserved in the conserved forces. Potential energy of charge q at a point is the work done by the external in bringing the charge q from infinity to that point.
What you learn in Practice:
The work done or the potential energy does not depend upon the path of the object but depends only on the initial and final positions of the object.