Physics GCSE
earth wire
What earth wire means in Physics GCSE, as defined for AQA, OCR.
Definitions of earth wire
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Reference: OCR
A safety wire connected to the metal case of an appliance that carries no current in normal use but provides a low-resistance path to earth if a fault occurs.
A safety wire that joins the metal case of an appliance to the ground through a very low resistance path, so the case is held at 0 V.
The green and yellow striped safety wire that connects the metal casing of an appliance to the ground.
Topics that use earth wire
- Direct and alternating potential difference (AQA GCSE)
- Mains electricity (AQA GCSE)
- Powering Earth (OCR GCSE)
Related terms
- neutral wire
- Live wire
- 230 V supply
- alternating current
- Alternating current in the home
- alternating potential difference
- Alternating voltage
- Changing potential difference in power transfer
Using earth wire in the exam
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