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GCSE Physics · key term
The output coil of a transformer, across which an alternating potential difference is induced.
Used by AQA, Edexcel and OCR
Specification 4.7.3.4 · Paper 2
The output coil of a transformer, in which an alternating potential difference is induced.
Revise: TransformersThe primary coil is connected to the input supply; the secondary coil provides the output. Iron is used because it is easily magnetised, so it carries the changing magnetic field effectively from one coil to the other.
Specification 13.5, 13.6, 13.7P, 13.10 · Paper 2
When identifying a transformer from a diagram, compare the secondary coil with the primary coil: more secondary turns means step-up; fewer means step-down.
Write down which values belong to the primary and secondary coils before substituting; do not mix the subscripts and .
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The transformer coil in which a changing magnetic field induces a potential difference.
The secondary coil belongs to another circuit. The wires of the two coils do not touch, so charge does not travel directly from one circuit to the other.
The output coil of a transformer, across which the transformed alternating voltage is produced.
The coil from which electrical power is transferred to the output circuit.
Specification P4.2g, P4.2h, P4.2i · Paper 1 (Foundation), Paper 3 (Higher)
The output coil of a transformer, in which a potential difference is induced.
Revise: TransformersA transformer transfers electrical energy between two separate circuits using electromagnetic induction. Its main parts are an input coil called the primary coil, an output coil called the secondary coil, and an iron core around which both coils are wound. The coils are not joined by a conducting wire, so charge does not travel directly from one circuit to the other.
The output winding of a transformer, across which an alternating potential difference is induced.
The coil of a transformer across which the output potential difference is produced.
Paper 1, Paper 2
The output coil of a transformer, across which a changing potential difference is induced.
Revise: Transformers and the Transformer EquationsA transformer transfers electrical energy between two circuits without joining them with a conducting wire. It has a primary coil and a secondary coil, both wound around the same iron core. The primary is the input; the secondary is the output.