P5. Electricity In The Home

Question 1

What is the frequency of the uk mains?

Answer 1

50 hertz

Question 2

What is the green and yellow striped wire?

Answer 2

Earth

Question 3

What is the brown wire?

Answer 3

Live

Question 4

What is the blue wire?

Answer 4

Neutral

Question 5

What is the national grid?

Answer 5

• system of pylons, cables and transformers that are used to transport electricity all over the country
• step up and step down transformers change the voltage
• voltage increases to reduce current, this proves efficiency as less heat is lost
• voltage in homes is 230v