Step-up and step-down transformers
What Step-up and step-down transformers means in Physics GCSE, as defined for OCR.
Definitions of Step-up and step-down transformers
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Reference: OCR
A step-up transformer has more turns on the secondary coil than on the primary coil and gives a larger secondary potential difference; a step-down transformer has fewer secondary turns and gives a smaller one.
A step-down transformer lowers potential difference and raises current in the same ratio.
A step-up result is larger than Vp and a step-down result is smaller.
Topics that use Step-up and step-down transformers
- Powering Earth (OCR GCSE)
- Uses of magnetism (OCR GCSE)
Related terms
- step-down transformer
- Transformer turns ratio
- Alternating current in the home
- Alternating voltage
- Applying and rearranging equations
- Changing potential difference in power transfer
- Danger of the live wire with an open switch
- Direct voltage
Using Step-up and step-down transformers in the exam
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