Motion In A Magnetic Field
Chapter Name : Moving Charges And Magnetism |
Sub Topic Code : 101_12_04_03_01 |
Topic Name : Motion In A Magnetic Field |
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Sub Topic Name : Motion In A Magnetic Field |
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Introduction
We will learn how a particle will move in a magnetic field and in magnetic force.
Pre-Requisites:
Knowledge about magnetic field and force exerted by a charge.
Activity:
See a cyclotron and find what will happen if there is no magnetic field or electric field.
Real Life Question:
Why we see green and pink lights dancing in the sky, specially in polar regions?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Helical Motion | Motion exhibited by a charge particle under the influence of electric and magnetic field. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| Cyclotron | This works on the principle of helical motion, see the path of charge particle. |
Real life uses :
Mass spectroscopy, cyclotron, synchrotron
Places to visit :
Your school physics lab.
Practical examples around us
| Examples | Explainations |
|---|---|
| Mass spectrometry | Used to determine the charge to mass ratio of a particle. |
What you learn in Theory:
In the presence of both electric field and magnetic field charge particle moves in a helical path. when both the E and B are not zero.
What you learn in Practice:
When particle moves in the presence of the electric field and magnetic field its radius increases on increasing the magnetic field. Also its energy is independent of frequency of rotation.