Read this passage and answer the questions below - Leaving Cert Physics - Question 11 - 2006
Question 11
Read this passage and answer the questions below.
Electricity is so much part of modern living that we often take it for granted. It is a powerful and versatile ene... show full transcript
Worked Solution & Example Answer:Read this passage and answer the questions below - Leaving Cert Physics - Question 11 - 2006
Step 1
Give one use for electricity in the home.
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Answer
Electricity is used for cooking, lighting, and powering various electrical appliances in the home.
Step 2
What is the function of the ESB meter?
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Answer
The ESB meter records and measures the amount of electricity consumed, allowing for billing and usage monitoring.
Step 3
What will happen when a current of 20 A flows through a fuse marked 13 A?
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Answer
The fuse will blow, which will cut off the electrical supply as a safety measure to prevent overheating or fire.
Step 4
Give one safety precaution that should be taken when wiring a plug.
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Answer
Ensure that all screw connections are fully tightened to prevent any loose wiring, which could lead to short circuits or electrical faults.
Step 5
What is the colour of the earth wire in an electric cable?
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Answer
The earth wire in an electric cable is typically green and yellow.
Step 6
Name a common material used to conduct electricity in electric cables.
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Answer
Copper is a common material used to conduct electricity in electric cables due to its excellent conductivity.
Step 7
Why are the covering on electric cables made from plastic?
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Answer
The plastic covering serves as an insulator, preventing electrical shocks and protecting the wires from environmental damage.
Step 8
Why are some appliances not earthed?
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Answer
Some appliances are double insulated, meaning they have enough insulation to protect users from electric shock and do not need an earth connection.
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