New Topic - Electricity Flashcards
1
Q
What is ‘The National Grid’?
A
A network of cables providing power to buildings
2
Q
How many volts does the power station produce?
A
25,000
3
Q
Give the order in how the power station works
A
Power Station - Step Up Transformer - Power Cables - Step Down Transformer - Houses
4
Q
What happens at a Step Up Transformer?
A
The voltage increases
5
Q
So if a step up INCREASES voltage, what does a step down transformer do?
A
Decreases Voltage
6
Q
What is ‘Electricity’?
A
A flow of charged particles
7
Q
What is the current?
A
The rate of charge flowing
8
Q
Explain why step-up transformers are used in the transmission of electricity in the National Grid
A
To increase the voltage which decreases the current and the loss of energy
