GCSE Physics - Plugs and Wires #22

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Physics
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9th - 10th Grade
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Hard
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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the standard voltage and frequency of the main electricity supply in the UK?
240 volts and 60 Hertz
230 volts and 50 Hertz
110 volts and 60 Hertz
220 volts and 50 Hertz
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which wire in a 3-core cable is responsible for carrying electricity into a device?
Live wire
Neutral wire
Earth wire
Ground wire
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the color of the insulation on the neutral wire?
Brown
Red
Green and yellow
Blue
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary role of the earth wire in electrical appliances?
To increase the voltage
To provide power to the device
To prevent the appliance casing from becoming live
To complete the circuit
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is it dangerous to touch the live wire?
It can cause a large current to flow through the body
It has a potential difference of 0 volts
It is always grounded
It is insulated with plastic
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