Use of Transformers (OCR GCSE Physics A (Gateway Science Suite)): Flashcards
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Practise the cards
12 cards from this deck
What do transformers do in the National Grid?
What do transformers do in the National Grid?
Increase and decrease potential difference
Two coils in a transformer
Two coils in a transformer
Primary coil and secondary coil
What transformer coils wrap around
What transformer coils wrap around
Iron core
Type of transformer that increases PD
Type of transformer that increases PD
Step-up transformer
Turns in secondary coil of step-up transformer
Turns in secondary coil of step-up transformer
More turns than primary coil
Use of step-up transformers
Use of step-up transformers
Electricity transportation via cables
Type of transformer that decreases PD
Type of transformer that decreases PD
Step-down transformer
Turns in secondary coil of step-down transformer
Turns in secondary coil of step-down transformer
Fewer turns than primary coil
Use of step-down transformers
Use of step-down transformers
Reduce PD before electricity reaches homes
Efficiency of transformers
Efficiency of transformers
Nearly 100% efficient
Transformer efficiency equation
Transformer efficiency equation
in transformer equation
in transformer equation
Potential difference in primary coil (V)