F2 - SEM1 - Circuit - 8.6 Household electricity - Part A Flashcards
Fill in the blanks
All electrical appliances are ________
8.6 Household electricity
All electrical appliances are energy converters
They convert electrical energy to other forms of energy
8.6 Household electricity
Give examples of household appliances using heating effect of current?
8.6 Household electricity
- electric heater
- toaster
- rice cooker
- electric iron
8.6 Household electricity
What is the main voltage in Hong Kong?
8.6 Household electricity
220V
8.6 Household electricity
Fill in the blanks
When we connect an electrical appliance to a socket, the appliance is supplied with ________
8.6 Household electricity
mains electricity
8.6 Household electricity
Where is mains electricity generated and how to transmit to homes?
8.6 Household electricity
- Mains electricity is generated in power stations
- Main electricity is transmitted to homes along power cables
8.6 Household electricity
How are the sockets connected in domestic circuits? Why?
8.6 Household electricity
Sockets are connected in parallel
All the sockets in a home have to work independently.
Switch off one of the appliances does not affect the operation of the others.
8.6 Household electricity
How many holes are there in the sockets we use in Hong Kong?
8.6 Household electricity
3 holes
8.6 Household electricity
Label the holes in the socket
8.6 Household electricity
- A - earth hole
- B - neutral hole
- C - live hole
8.6 Household electricity
What kind of plugs do we use in Hong Kong?
8.6 Household electricity
three-pin plugs
8.6 Household electricity
What are the 3 pins in three-pin plugs? which one is the longest?
8.6 Household electricity
- Earth pin - longest
- Live pin
- Neutral pin
8.6 Household electricity
Label the 3 pins in the three-pin plugs
8.6 Household electricity
- flex grip
- neutral wire
- earth wire
- live wire
- fuse
8.6 Household electricity
What is the colour of earth wire, live wire and neutral wire?
8.6 Household electricity
- earth wire - green yellow
- neutral wire - blue
- live wire - brown
8.6 Household electricity
Label the 3 pins in the three-pin plugs
8.6 Household electricity
- A - earth pin
- B - live pin
- C - neutral pin
8.6 Household electricity
Which is the purpose of live wire and neutral wire?
8.6 Household electricity
- connect the electrical appliance to the main supply
- form a complete circuit and current flow through electrical appliance
8.6 Household electricity
**What is the purpose of the earth wire?
8.6 Household electricity
earth wire is for safety
8.6 Household electricity
