GS revision (Electricity and Daily Life) Part 1

What is the main function of a vacuum cleaner?

• produce light

• produce heat

• produce sound

• produce motion

What will happen if you connect a coil iron wire with electricity? The coil iron wire _____.

• becomes an electromagnet

• becomes hot

• makes sound

• lights up

What kind of light bulb is more energy-efficient?

• Incandescent light bulb

• compact fluorescent lamp (CFL)

• LED light bulb

Which of the following electrical appliances may cause fire easily?

• hair dryer

• iron

• computer

• electric kettle

Lots of energy is wasted as _______ in many light bulbs.

• motion

• light

• heat

• sound