Physics GCSE
National Grid transmission
What National Grid transmission means in Physics GCSE, as defined for AQA.
Definition of National Grid transmission
Check what you remember
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Reference: AQA
Step-up transformers increase potential difference and decrease current, and since energy wasted heating cables depends on the square of the current, a smaller current significantly reduces energy transferred to the surroundings.
Topics that use National Grid transmission
- Transformers (HT only) (AQA GCSE)
Related terms
- iron core
- magnetic linking
- Turns ratio and power equations
- Changing magnetic field
- Easily magnetised
- primary coil
- secondary coil
Using National Grid transmission in the exam
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