This page covers the magnetic fields section of the course. It is worth realising that the iGCSE does not cover all the ideas that AQA 1-9 GCSE covers for this part of the course. Hence, it is worth going over things like FBI from formulae perspective unless you teacher did some extra ideas.
This is how you can work out e/m for circular beam of electrons thermionic [...]
This is how you can work out e/m for circular beam of electrons thermionic emitted from a filament.
It uses both electric fields and mag fields and Helmholtz coils.
Photocopier Magnetic Toner
Perrin Tube - Electron Demo A2 AQA Mag Fields
The stream of electrons or "cathode rays" are deflected into a Faraday [...]
The stream of electrons or "cathode rays" are deflected into a Faraday cage, which is connected to an electroscope, to show that electrons have a negative charge.
It is important ...that the whole beam should enter the cylinder to avoid the production of secondary electrons by the beam striking the sides. For this reason it is more reliable to use the coils to deflect the beam than to do the experiment with a bar magnet deflecting the beam as I have done here.
You may find that the charge leaks away as soon as you remove the magnetic field that is causing the deflection. So it is best to view the effects live.
Result is to prove that cathode rays have a charge, which you can then go on to show is negative. Also that they have mass and obey the formulas used in A2 Physic for a particle moving in a B-field
Magic Magnetic forces balanced with gravitational forces
Magnetic Field lines balanced forces
Magnetic Field lines balanced forces
Q9 6B Magnetic Fields June 2018 iGCSE Physics
This is a quick video walkthrough of an Edexcel exam question. It is [...]
This is a quick video walkthrough of an Edexcel exam question. It is designed so you can look at questions which relate to questions from specific parts of the course.
It ...is taken from a real paper and I have used a real mark scheme which I have adapted for on-screen use. If you listen carefully it will give you a really good idea of what an examiner is looking for.[+] Show More
How The Northern Lights Are Created VIDEO
Magnetic Fields, Flux Density & Motor Effect - GCSE & A-level Physics
http://scienceshorts.net Please don't forget to leave a like if you found [...]
http://scienceshorts.net Please don't forget to leave a like if you found this helpful! If you appreciate the help, consider tipping me to keep me going 🙂 http://bit.ly/scienceshortsdonate2 Join the Discord ...for support! https://discord.gg/pyvnUDq -------------------------------------------------------- 00:00 Magnetic field lines 04:51 Magnetic flux & flux density (field strength) 07:00 Field around current in wire 08:17 Motor effect, F=BIL, Fleming's left hand rule 15:04 Experiment[+] Show More
Working Principle of DC Motor (animation of elementary model)
Working Principle of DC Motor - Video gives an brief explanation in form of [...]
Working Principle of DC Motor - Video gives an brief explanation in form of animation how does DC Motor works. Also you can view working principle on elementary ...model with poles, commutators, brushes, turns and what role in working principles has mechanical force.
PRINCIPLE OF DC MOTOR This DC or direct current motor works on the principal, when a current carrying conductor is placed in a magnetic field, it experiences a torque and has a tendency to move. This is known as motoring action. If the direction of current in the wire is reversed, the direction of rotation also reverses. When magnetic field and electric field interact they produce a mechanical force, and based on that the working principle of DC motor is established.
The direction of rotation of a this motor is given by Fleming’s left hand rule, which states that if the index finger, middle finger and thumb of your left hand are extended mutually perpendicular to each other and if the index finger represents the direction of magnetic field, middle finger indicates the direction of current, then the thumb represents the direction in which force is experienced by the shaft of the DC motor. Structurally and construction wise a direct current motor is exactly similar to a DC generator, but electrically it is just the opposite. Here we unlike a generator we supply electrical energy to the input port and derive mechanical energy from the output port
Hall Effect Explained, Electric & Magnetic Field, Drift Velocity & Charge Density Calculations
This physics video tutorial provides a basic introduction into the hall [...]
This physics video tutorial provides a basic introduction into the hall effect. It explains how a hall effect sensor can be used to measure a magnetic field. ...It explains how to calculate the electric field across a conductor perpendicular to the current, how to determine the magnetic field, how to calculate the drift velocity of the electrons and the charge density given the hall emf induced by the magnetic field and the current flowing through the material. Whenever electrons flow through a conductor in the presence of a magnetic field, they began to drift to one side of the conductor creating a hall emf with an electric field that is perpendicular to the direction of the current. This hall emf can be used to measure the strength of a magnetic field. This video contains plenty of examples and practice problems.
What is a cyclotron, the physics behind its working and why.
This video discusses the working of the cyclotron, the physics principles - [...]
This video discusses the working of the cyclotron, the physics principles - the use of electric and magnetic fields to speed up charged particles - and uses the example ...of ANSTO National Research Cyclotron in Sydney in Australia.
See http://www.physicshigh.com for all my videos and other resources. If you like this video, please press the LIKE and SHARE with your peers. And please add a COMMENT to let me know I have helped you. Follow me facebook: @physicshigh twitter: @physicshigh[+] Show More
Ernest O. Lawrence Talks About the Evolution of the Cyclotron
In this video, Berkeley Lab Founder & Nobelist Ernest O. Lawrence can be [...]
In this video, Berkeley Lab Founder & Nobelist Ernest O. Lawrence can be heard talking about the evolution of the cyclotron & its potential for science with the host of ...the radio program, "The National Farm and Home Hour". According to Wikipedia, The National Farm & Home Hour was a variety show which was broadcast in various formats from 1928 to 1958. Aimed at listeners in rural America, it was known as "the farmer's bulletin board" & was produced by the United States Department of Agriculture. http://en.wikipedia.org/wiki/The_National_Farm_and_Home_Hour[+] Show More
Ernest O. Lawrence & The Inspiration for the Cyclotron
Watch this video to learn what inspired Berkeley Lab founder and Nobelist [...]
Watch this video to learn what inspired Berkeley Lab founder and Nobelist Ernest O. Lawrence to create the first cyclotron.
Visualising Antimatter with Bubble Chambers - Christmas Lectures with Frank Close
You can use a bubble chamber to visualise the passage of negatively charged [...]