
Understand that electric current is the flow of electric charge. Recognize conventional current from positive to negative, and electron flow oppositely.
Explore how power, energy, and time relate in electricity using kilowatt-hours, and apply formulas: power = energy over time and power = voltage times current.
Compare temporary magnets, which are soft and lose magnetic alignment, with permanent magnets, which stay aligned. Learn how permanent magnets drive devices like motors, generators, relays, and magnetic data storage.
This course covers the iGCSE / GCE O Level Physics syllabus for - (a) Electricity, and (b) Magnetism.
For Electricity and Magnetism you will learn about - (1) Static Electricity, (2) Current of Electricity, (3) Direct Current Circuits, (4) Practical Electricity, (5) Magnetism, (6) Electromagnetism, and (7) Electromagnetic Induction.
There are 7 sections in total. Each section has 3 lectures.
The section begins with a discussion of electric charges that are static, i.e. not moving. Next, we study the phenomena associated with moving charges and the concepts of current, voltage and resistance. We also study how these concepts are applied to simple circuits and household electricity. Thereafter, we study the interaction of magnetic fields to pave the way for the study of the interrelationship between electricity and magnetism. The phenomenon in which a current interacts with a magnetic field is studied in electromagnetism, while the phenomenon in which a current or electromotive force is induced in a moving conductor within a magnetic field is studied in electromagnetic induction.