6dElectromagnetic induction

Syllabus objectives

• 6.15know 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
• 6.16describe 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
• 6.17describe 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 sidesSeparate Physics only
• 6.18explain the use of step-up and step-down transformers in the large-scale generation and transmission of electrical energySeparate Physics only
• 6.19know and use the relationship between input (primary) and output (secondary) voltages and the turns ratio for a transformer: input (primary) voltage primary turns output (secondary) voltage secondary turn s=Separate Physics only
• 6.20know and use the relationship: input power = output power sspp IVIV = for 100% efficiencySeparate Physics only