Mains Electricity (OCR GCSE Physics A, Combined (Gateway Science Suite)): Quizzes
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14 questions from this quiz
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Practise the questions
14 questions from this quiz
What type of current is supplied by UK mains electricity?
What type of current is supplied by UK mains electricity?
Alternating current (AC)
What is the frequency of UK domestic electricity supply?
What is the frequency of UK domestic electricity supply?
Hz
What is the voltage of UK mains electricity?
What is the voltage of UK mains electricity?
About V
What does a frequency of Hz mean?
What does a frequency of Hz mean?
50 cycles per second
Which devices supply direct current (DC)?
Which devices supply direct current (DC)?
Cells and batteries
What colour is the live wire in a plug?
What colour is the live wire in a plug?
Brown
What colour is the neutral wire in a plug?
What colour is the neutral wire in a plug?
Blue
What colour is the earth wire in a plug?
What colour is the earth wire in a plug?
Green and yellow stripes
What is the voltage of the live wire?
What is the voltage of the live wire?
V
What is the voltage of the neutral wire?
What is the voltage of the neutral wire?
V
What is the main function of the earth wire?
What is the main function of the earth wire?
Safety wire to prevent appliance becoming live
What is the function of the neutral wire?
What is the function of the neutral wire?
Completes the circuit
Why is copper used in electrical wires?
Why is copper used in electrical wires?
Good conductor of electricity
What happens when a metal case becomes live?
What happens when a metal case becomes live?
Huge current flows to earth, fuse melts