1. Quiz on Domestic Electrical Appliances

2. 1. A resistance coil is also called a heating coil. a fuse. an earth wire. a live wire.

3. 2. Which of the following is NOT making use of heating effect of electric current to operate? Electric heater Hairdryer Electric radiator Electric doorbell

4. 3. What is the function of the insulation layer inside the heating element of an electric kettle? Prevent heat leakage Prevent heat leakage Separate the heating wire from the metallic tube and prevent electrical leakage. Speed up boiling of water Avoid overloading

5. 4. Which of the following appliance has the heating element hidden and is separated from the other metallic part of the body? hairdryer Electric cooker Electric heater Electric fan

6. 5. A device that generate a magnetic effect after being connected to the power supply is known as A solenoid An electric breaker An electromagnet A doorbell

7. 6. Which of the following is NOT making use of magnetic effect of electric current to operate? Electric doorbell Handset Washing machine Oven

8. 7. Which of the followings are the necessary components for making an electromagnet? (i)Electricity supply (ii)Long piece of Insulated wire (iii)Iron core (iv)Fuse Only (i) and (ii) Only (i) and (iii) Only (i) 、 (ii) and (iii) (i) 、 (ii) 、 (iii) and (iv)

9. 8. Which of the following appliances DO NOT use a motor to operate? Blender Electric iron Electric fan Air conditioner

10. 9. Which of the following is correct?

11. 10. The unit of power is volt ampere watts ohm

12. 11. Which of the following is correct?

14. 12. Which of the following is correct? Power X Time = Energy Power X Current = Energy Power X Time = Voltage Power X Voltage = Current

15. 13. What does a kilowatt-hour meter measure? current energy power voltage