Mains Electricity (OCR GCSE Physics A (Gateway Science Suite)): Flashcards
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Frequency of UK mains electricity
Frequency of UK mains electricity
Hz
Voltage of UK mains electricity
Voltage of UK mains electricity
V
What is AC (alternating current)?
What is AC (alternating current)?
Current that varies from positive to negative direction
What is DC (direct current)?
What is DC (direct current)?
Movement of charge in one direction only
What supplies direct current?
What supplies direct current?
Cells and batteries
What does Hz mean for UK mains?
What does Hz mean for UK mains?
cycles of positive and negative currents per second
Colour of live wire
Colour of live wire
Brown
Voltage of live wire
Voltage of live wire
V
Function of live wire
Function of live wire
Carries alternating P.D. from supply
Colour of neutral wire
Colour of neutral wire
Blue
Voltage of neutral wire
Voltage of neutral wire
V
Function of neutral wire
Function of neutral wire
Completes the circuit
Colour of earth wire
Colour of earth wire
Green and yellow stripes
Voltage of earth wire
Voltage of earth wire
V
When does earth wire carry current?
When does earth wire carry current?
Only if there is a fault