Electricity 0.0 / 5 ? PhysicsElectricityGCSEAQA Created by: kennedylilyCreated on: 03-01-16 10:26 What is the frequency of UK mains electricity supply? 230 V 1 of 9 Which of the live, neutral or earth wires is always at 0 volts? Neutral 2 of 9 Why is the case of a plug usually made out of plastic? It's a good insulator, so the electricity keeps flowing where it should be 3 of 9 Appliances with double insulation don't need which wire? Earth wire 4 of 9 What energy transformation occurs when electric current flows through a resistor? Electrical to heat 5 of 9 What is the equation linking Q, V and E? E = Q x V 6 of 9 What colour is the live wire? Brown 7 of 9 What colour is the neutral wire? Blue 8 of 9 Which two colours are the earth wire? Green and yellow 9 of 9
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