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(d) Electromagnetic induction

Syllabus
2024
Topic
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Level
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6.15 Induced voltage

Know that a voltage is induced in a conductor or a coil when it moves through a magnetic field or when a magnetic field changes through it and describe the factors that affect the size of the induced voltage

6.16 Generating electricity

Describe the generation of electricity by the rotation of a magnet within a coil of wire and of a coil of wire within a magnetic field, and describe the factors that affect the size of the induced voltage

6.17P Transformers

Describe the structure of a transformer and understand that a transformer changes the size of an alternating voltage by having different numbers of turns on the input and output sides

6.18P Step-up and step-down transformers

Explain the use of step-up and step-down transformers in the large-scale generation and transmission of electrical energy

6.19P Transformer turns ratio

Know and use input voltage ÷ output voltage = primary turns ÷ secondary turns, Vₚ/Vₛ = Nₚ/Nₛ.

6.20P Transformer power equation

Know and use input power = output power, VₚIₚ = VₛIₛ, for a 100% efficient transformer.

Objective notes

6 learning objectives
617P TransformersDescribe the structure of a transformer and understand that a transformer changes the size of an alternating voltage by having different numbers of turns on the input and output sidesView618P Step-up and step-down transformersExplain the use of step-up and step-down transformers in the large-scale generation and transmission of electrical energyView619P Transformer turns ratioKnow and use input voltage ÷ output voltage = primary turns ÷ secondary turns, Vₚ/Vₛ = Nₚ/Nₛ.View620P Transformer power equationKnow and use input power = output power, VₚIₚ = VₛIₛ, for a 100% efficient transformer.View
ConceptIGCSE Physics