3D view of forces on parallel currents using GeoGebra
Open in new tab đź”— The simulation serves to show how the magnetic field of one current-carrying wire exerts a force on another current-carrying wire. When two wires are placed...
17 Electromagnetic Forces
Fleming's left-hand rule vs right-hand palm rule
Fleming’s Left-Hand Rule and the Right-Hand Palm Rule are visual tools used to predict directions in electromagnetic interactions. Fleming’s Left-Hand Rule applies to electric...
Movement of charged particle in parallel E and B fields
Access via https://www.geogebra.org/m/erehat7n for a full-screen view.
Videos on Electromagnetism
This is a post that exists simply to park the YouTube videos that I might need to use during a JC2 lecture on Electromagnetism.
Magnetic Force on a Current-Carrying Conductor
Using a neodymium magnet, some paper clips and a battery, you can demonstrate the magnetic force acting on a current-carrying wire while recalling Fleming's left-hand rule. Using...
Building a Simple DC Motor
Using material that is easily available, you can build a simple homopolar D.C. motor (one that uses a single magnetic pole. I made the video above to help you do so. The material...
Magnetic Shielding
I made this rather simple video this morning showing a physics demonstration on the effect of magnetic shielding. A paper clip is shown to be attracted to a magnet. A series of...
Diamagnetism
I didn't want to spend money on buying a piece of pyrolytic graphite and large neodymium magnets so I made do with what I have to make the following video. While diamagnetism is...
Magnetic Shielding
Materials Bar magnet Paper clip (stainless steel) Plastic clipboard Steel bookend Procedure Before the demonstration, make sure that the paper clip is not already magnetised by...
Homopolar Motor 2
This video demonstrates how a simple homopolar motor is made using a screw and a small neodymium magnet. The simplest possible motor one can make, it can be used to teach concepts...
Electromagnetism Lecture
I enjoy lecturing on topics like Superposition and Electromagnetism in the GCE A-level syllabus as they lend themselves well to the use of fun demonstrations that I can perform in...
Measuring the Force on a Current-Carrying Conductor
The force acting on a current-carrying conductor is given by $$F =BIl sin \theta$$ where B is the magnetic flux density, I is the current, l is the length of the wire and $\theta$...
Homopolar Motor 1
A homopolar motor is a simple electric motor that does not require the use of a commutator. The electric current flows in a fixed direction within the wires of the motor. The...
Electromagnet
Materials Insulated wire (about 1 m in length) Iron nail (at least 5 cm in length) 1.5 V battery Adhesive tape Small metal paper clip Procedure Test that the iron nail is not...
Oersted's Experiment
Hans Christian Oersted showed that an electric current can affect a compass needle in 1820. This confirms the direct relationship between electricity and magnetism, which in turn,...