Energy Transfers (AQA GCSE Physics Combined Science): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What voltage is mains electricity in UK homes?
What voltage is mains electricity in UK homes?
230V AC
What colour is the live wire in a three-core cable?
What colour is the live wire in a three-core cable?
Brown
What colour is the neutral wire?
What colour is the neutral wire?
Blue
What colour is the earth wire?
What colour is the earth wire?
Yellow and green
What is the main job of the live wire?
What is the main job of the live wire?
Carries electrical supply to appliance
What is the main job of the neutral wire?
What is the main job of the neutral wire?
Completes the electrical circuit
What is the main job of the earth wire?
What is the main job of the earth wire?
Acts as a safety feature
What is the potential difference between the live wire and neutral wire?
What is the potential difference between the live wire and neutral wire?
230V
What is the potential difference between earth and neutral wires?
What is the potential difference between earth and neutral wires?
0V
Why is the live wire always dangerous even when an appliance is switched off?
Why is the live wire always dangerous even when an appliance is switched off?
It still carries 230V
What happens when a large current flows through the earth wire due to a fault?
What happens when a large current flows through the earth wire due to a fault?
Fuse heats up and melts
How do the fuse and earth wire work together for safety?
How do the fuse and earth wire work together for safety?
Earth ensures large current to melt fuse