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Conceptual understanding: the generation of electricity relies on the application of electromagnetic relationships.
Conceptual understanding: the generation of electricity relies on the application of electromagnetic relationships.
Global context: scientific and technical innovation - generating electricity allows for much of our modern world.
Global context: scientific and technical innovation - generating electricity allows for much of our modern world.
Unit Structure
Unit Structure
Strand 1: Permanent magnets and Oersted
Some materials have a magnetic property that can be described using models, diagrams, and equations.
Some materials can be given a variable magnetic property that can be described using models, diagrams, and equations.
Inquiry questions:
How do we observe magnetic fields around wires? (F)
What is the difference between AC and DC current? (F)
How can we vary the strength of an electromagnet? (F)
How can we produce movement with electric current and magnetic fields? (F)
Can magnetic fields be produced around wires carrying AC current in this way? ©
What is magnetism/what are magnetic fields? (D)
What can we use electromagnets for? (D)
Strand 2: Faraday’s law of induction
Changing the magnetic field can lead to electromagnetic effects in nearby materials.
Controlling changing magnetic fields can lead to applications such as transformers.
Inquiry questions:
Why is electricity supply in the form of AC? (F)
How can we change the potential difference generated? (F)
What is a transformer? (F)
Why do we want to transform potential difference and current? (C)
How can current be induced in a wire that is not connected to a circuit? (C)
Approaches to Learning:
Approaches to Learning:
Thinking - Critical - Use models and simulations to explore complex systems and issues (focus on modelling fields)
Thinking - Critical - Test generalisations and conclusions (focus on concept of efficiency)
Applications and skills:
Applications and skills:
Describe how to find the magnetic field around an object.
Describe how to strengthen simple electromagnets.
Describe the magnetic field around a current carrying wire.
Use the Left Hand Rule to determine the direction a current carrying write will move in an electric field.
Calculate the magnetic force using F=BIL.
Describe the factors that change the emf produced (summarised in Faraday’s Law).
Describe the changes to potential difference and current across 100% efficient transformers.
Outline the advantages of high-voltage transmission (in systems such as the national grid).
Assessments:
Assessments:
Formative task - building DC motors (AS 2-4)
Formative task - electricity production poster (Examples in folder, task specific teacher clarifications) (AS 6)
Formative task - building transformers (task specific teacher clarifications) (AS 7)
Summative task - paper based full lesson test (AS 2-7).
Summative task - research project (AS 1-8)
Comparison to other international Grade 10 Courses
Comparison to other international Grade 10 Courses
eMYP (The Grade 10 IB Physics Course): Electromagnetism (magnetism, electric and magnetic fields; static electricity; electromagnetic forces and induction, AC & DC; current, voltage, power, generation and transmission of electricity; electric circuits)
iGCSE Grade 10 Course (Cambridge 2023-25 Syllabus): the relevant sections are copied below
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