Cables And Plugs

Question 1

The ________ Wire Stops the Metal Case Becoming Live if the Live Wire Breaks and Touches the Case.

Answer 1

Earth.

Question 2

The Outer Casings of Plugs, Sockets and Cables of All Mains ____________ and Appliances are Made of Hard-Wearing Electrical _______________.

Answer 2

Circuits…Insulators…

Question 3

The Earth Wire is Connected to the _________ at Home.

Answer 3

Ground.

Question 4

Features of a Three-Pin Plug?

Answer 4

• Pins are Made of Brass because Brass is a Good Conductor.
• The Case Material is an Electrical Insulator.
• The Plug Contains a Fuse Between the Live Pin and the Live Wire.
• The Brown Wire is Connected to the Live Pin.
• The Blue Wire is Connected to the Neutral Pin.
• The Green and Yellow Striped Wire is Connected to the Earth Pin.

Question 5

Features of Cables?

Answer 5

• Copper is Used for the Wires Because it’s a Good Electrical Conductor and Bends Easily.
• Plastic is a Good Electrical Insulator.

Question 6

If a Live Wire Inside the Appliance Touches the __________ Wire, a Very Big Current Passes Between the ______ Wires at the Point of Contact. This is Called a _________ Circuit.

Answer 6

Neutral…Two…Short…