Physics 2.3.5 Flashcards
What does the National Grid do?
The National Grid Distributes Electricity across the UK.
What Components make up the National Grid? (4)
-Cables.
-Transformers.
-Power Stations.
-Consumers.
What are the 2 types of Transformers in the National Grid, and what do they do? (2)
-Step-Up Transformers: Increase the Voltage (& Decrease Current) through the Cables.
-Step-Down Transformers: Decrease the Voltage (& Increase the Current) through the Cables.
What is the Benefit of the National Grid, and how?
Less Wasted Energy. Because by increasing the PD at which the Current is Transmitted, the Same amount of Power can be Transferred using a much Smaller Current.
High Potential Difference means ___ Current (___ Energy Dissipated) for the Same Power.
Low, Less.
Low Potential Difference means ___ Current (___ Energy Dissipated) for the Same Power.
High, More.
Which Transformers Increase PD?
Step-Up Transformers.
Which Transformers Decrease PD?
Step-Down Transformers.
