The National Grid Flashcards
1
Q
What does a transformer do?
A
Changes the voltage in an electrical circuit
2
Q
What does a step up transformer do and where is it found?
A
Increases voltage, power station end
3
Q
What does a step down transformer do and where is it found?
A
Decreases voltage, close to the users
4
Q
What is the relationship between voltage and current, how does this affect the wires connecting the two transformers?
A
Inversely proportional, high voltage low current
5
Q
Why do the wires have to have low currents?
A
Current produces heat, which is a type of waste in this scenario so less efficient
