Scientific principles PowerPoint 8 8202

Which of the following materials is a good conductor of electricity?

• Rubber

• Copper

• Plastic

• Glass

What is the purpose of insulators in electrical components?

• To allow electricity to flow

• To conduct heat

• To protect from electric shocks

• To increase voltage

Which color wire is typically used for the live connection in electrical wiring?

• Blue

• Green & Yellow

• Brown

• Red

What is a potential risk of using an undersized cable?

• The cable can become more durable.

• The cable can overheat and burn.

• The cable can become more energy-efficient.

• The cable can become lighter.

What is the voltage between the live and earth wires?

• 0-15v AC

• 230v AC

• 115v AC

• 50v AC

What is the voltage between the neutral and earth wires?

• 230v AC

• 115v AC

• 0-15v AC

• 50v AC

Which wire is indicated by the color blue in electrical testing?

• Live

• Neutral

• Earth

• Ground

What type of appliances commonly use heat resistant flex?

• Refrigerators and freezers

• Kettles, irons, and immersion heaters

• Televisions and radios

• Computers and printers

What is the purpose of the main fuse in an electrical supply system?

• To measure electricity usage

• To protect the circuit from overload

• To connect to the gas service

• To provide a backup power source

Where is the consumer unit typically found in a property?

• In the kitchen

• Where the electrics enter the property

• In the attic

• In the basement