They learn about the basic principles of Physics through a mix of theoretical and practical studies. Learners also develop an understanding of the scientific skills essential for further study at Cambridge International A Level, skills which are useful in everyday life.
What are Magnets and Magnetic Fields? A magnet has two polescalled North and South. A magnetic field is a region around the magnet where magnetic materials experience a force. There are only three magnetic elements. They are iron, nickel and cobalt. In practice you will only use iron, or steel which is an alloy of Iron.
What is the Shape and Direction of a Magnetic Field? The shape of the magnetic field around the magnet is shown by lines. Arrows on the lines point away from North and towards South to show the direction of the magnetic field.
Notice that the lines of magnetic force do not cross each other. The closer together the lines are, the stronger the field is. You need to know the shape of the magnetic field for a bar magnet see below The magnetic field can be seen by placing the magnet under a piece of paper with small iron filings on top.
The filings line up in the shape of the field, as shown above. The direction of the arrows can be seen by placing a compass in the field. The compass points in the direction of the arrows, away from North and towards South. Note - this means that when a compass points to the Earth's North Pole, there must be a magnetic South Pole up there bet that confuses the penguins!2 This photograph shows an electromagnetic device used to keep a door open.
The electromagnet attracts the metal plate to hold the door open. The electromagnet is connected to a fire alarm circuit. When the fire alarm sounds, the door is released and it closes.
Questions are posed to the class to stimulate discussion and indicate how concepts are going over. Students "vote" on answers electronically and their answers are tallied.
Lecture notes. Basics of Electromagnetism. by Ron Kurtus (revised 17 December ) Electromagnetism has two meanings, depending on whether viewed at the subatomic level or on an everyday scale.. At the subatomic level, electromagnetism is defined as the force between electrically charged particles.
EDEXCEL IGCSE / CERTIFICATE IN PHYSICS Magnetism and Electromagnetism Edexcel IGCSE Physics pages to September 19 th Content applying to Triple Science only is shown in red type on the next slide and is indicated on subsequent slides by ‘ TRIPLE ONLY ’.
The most important part of your online IGCSE Physics LearnOnline course (apart from you) is your dedicated tutor. Every LearnOnline tutor has extensive academic experience and have taught IGCSE Physics in the classroom as well as online.
Physics is the science that deals with physical matter, motion, energy and the laws that govern the universe. Our home study IGCSE course introduces you to the key concepts of the science, taking a look at areas including heat, light, magnetism and electricity.