mains electricity

Question 1

what are 3 plugs made out of?

Answer 1

three copper wires that are coated with plastic.

copper wires are good
conductors
plastic is a good
insulator

Question 2

what is a conductor?

Answer 2

it is a material that allows current to pass through it easily- it has a ow resistance.

Question 3

what is an insulator?

Answer 3

material that does not allow charge or heat to pass through it easily

Question 4

describe the live wire in a plug and its functions.

Answer 4

the live wire is a copper wire coated with brown plastic along which Carries the alternating potential difference from the supply. it is at 230 volts

Question 5

describe the functions of the neutral wire and what it is.

Answer 5

the neutral wire is a copper wire coated with blue plastic that completes the circuit

Question 6

describe what is meant by the earth wire and its functions.

Answer 6

Copper wire coated in striped plastic that provides a path for current to flow from the case of the device to the ground if there is a fault. it is at 0 volts and only carries current if there is a fault. it acts as a saftey wire stopping the appliance from becoming live.