# Electromagnetism Welcome to the GCSE Physics Ninja Electromagnetism course.

These video lessons are based on question-and-answer flashcards. You can either make your own or purchase the printable flashcards from the shop.

 Magnetism The Motor Effect 1. Properties of magnets 1 15. Force in a magnetic field 2. Properties of magnets 2 16. The motor effect 3. Magnets near materials 17. Fleming's left hand rule 4. Materials containing iron 18. Coil in a magnetic field 5. Magnetic properties of iron vs. steel 19. The DC motor 6. Types of magnetic materials and their uses 20. Electromagnetic force experiment 7. Magnetising and demagnetising Electromagnetic Induction 8. Magnetic field pattern experiment 21. Electromagnetic induction Electricity & Magnetism 22. Changing magnetic fields 9. Magnetic field lines due to a current 23. How to increase and induced EMF 10. Variation of magnetic field strength 24. Direction of an induced current 11. Effect of electrical currents 25. The rotating coil generator 12. A simple electromagnet 26. AC voltage generator graph 13. Relays 27. Transformers 14. Electric bell 28. Parts of a transformer 29. Transformer voltage and turns equation 30. Transformer voltage and turns calculation 31. Transformer power equation 32. Transformer power calculation 33. Switch mode transformers

## What will I learn in this course?

When you have completed this course, you will be able to...

• Describe the properties of magnets and their effects on other materials.
• Recall the magnetic properties of iron vs. steel.
• Draw the typical magnetic field pattern around a magnet.
• Understand how to magnetise and demagnetise a magnetic material.
• Explain how a current creates its own magnetic field.
• Describe how to make a simple electromagnet and explain its various uses.
• Understand the motor effect and use Fleming's left hand rule.
• Describe the construction of a DC motor
• Explain how electromagnetic induction can generate an EMF in a conductor.
• Predict the direction of an induced current.
• Describe how a rotating coil generator works.
• Understand how a transformer uses electromagnetic induction to change voltages.
• Recall the structure of a simple transformer.
• Calculate input and output voltages using the transformer voltage-turns equation.
• Use the transformer power equation to calculate voltages and currents.
• Explain the differences between a standard iron core transformer and a switch mode transformer.