Magnetic Force
Chapter Name : Moving Charges And Magnetism |
Sub Topic Code : 101_12_04_02_02 |
Topic Name : Magnetic Force |
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Sub Topic Name : Magnetic Field, Lorentz Force |
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Introduction
In presence of the magnetic field, charge exhibits magnetic force.
Pre-Requisites:
About magnetic forces.
Activity:
Take two magnets and put north pole of first magnet near to the north pole of second magnet. Why these two magnets repel each other?
Real Life Question:
In a instrument like cyclotron why a charge particle moves in a circle?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Lorentz force | Force on an charge due to both magnetic field and electric field. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| Bar magnet | See how the bar magnet attracts the iron pieces. |
Real life uses :
In many measuring instruments this quality is used to detect the current or to measure the current.
Places to visit :
Your school physics lab. Also you can bring two pieces of magnet at home and see their interactions.
Practical examples around us
| Examples | Explainations |
|---|---|
| Every wire around us | Every current carrying wire around us exerts a magnetic force in the surroundings. |
What you learn in Theory:
Every current carrying conductor exerts a magnetic force in its surroundings, which can be evaluated by use of Lorentz law.
What you learn in Practice:
This quality of current carrying wire can be used to detect current or measure current in many instruments.