Use of Transformers (OCR GCSE Physics A, Combined (Gateway Science Suite)): Flashcards
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Practise the cards
11 cards from this deck
Role of transformers in the National Grid
Role of transformers in the National Grid
Increase and decrease potential difference as needed
Two coils in a transformer
Two coils in a transformer
Primary coil and secondary coil
Material transformer coils wrapped around
Material transformer coils wrapped around
Iron core
Type of transformer that increases p.d.
Type of transformer that increases p.d.
Step-up transformer
Coil turns in step-up transformer: primary vs secondary
Coil turns in step-up transformer: primary vs secondary
Secondary has more turns than primary
Use of step-up transformers
Use of step-up transformers
Transportation of electricity via cables
Type of transformer that decreases p.d.
Type of transformer that decreases p.d.
Step-down transformer
Coil turns in step-down transformer: primary vs secondary
Coil turns in step-down transformer: primary vs secondary
Secondary has fewer turns than primary
Use of step-down transformers
Use of step-down transformers
Reduce p.d. before electricity reaches homes
Efficiency of transformers
Efficiency of transformers
Nearly 100% efficient