AQA Trilogy GCSE Science - Science
Mission Objectives
Explain how the effect of an alternating current in one coil in inducing a current in another is used in transformers
Explain how the ratio of the potential differences across the two coils depends on the ratio of the number of turns on each coil
Calculate the current drawn from the input supply to provide a particular power output
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Words and meanings to learn
current
the flow of electric charge around a circuit, measured in amperes (A)
magnetic field
the region around a magnet or a current-carrying wire where magnetic forces can be detected
transformer
a device that changes the size of an alternating potential difference using two coils of wire (primary and secondary) wrapped around an iron core
induced potential difference
the voltage generated across a conductor when it moves through a magnetic field or when the magnetic field around it changes
National Grid
the system of cables and transformers used to transfer electrical power from power stations to homes and industries across the country
Samantha is a dedicated and accomplished science educator with over 15 years of leadership experience in the field, coupled with a strong background in scientific analysis. She has a proven track record of strategically managing educational departments, driving operational efficiencies, and nurturing collaborative relationships with stakeholders.
Samantha previously served as the Head of Chemistry and Sixth Form Tutor, Ilkley Grammar School, Ilkley with extensive Key Stage 4 and 5 teaching experience and leadership. In addition to her teaching and leadership roles, she is also an examiner for AQA, providing her with valuable insight into assessment standards and exam specifications.
In her spare time, Samantha enjoys playing the accordion with her local orchestra and has recently taken up cricket, where she's enthusiastically honing her skills both on and off the pitch!
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