The National Grid (OCR GCSE Physics A (Gateway Science Suite)): Flashcards
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Practise the cards
12 cards from this deck
National Grid definition
National Grid definition
System of cables & transformers linking power stations to consumers
Purpose of the National Grid
Purpose of the National Grid
Transfers electrical power from power stations to consumers
Effect of step-up transformers on P.D.
Effect of step-up transformers on P.D.
Increase potential difference
Location of step-up transformers
Location of step-up transformers
From power station to National Grid
Reason for step-up transformers
Reason for step-up transformers
Reduces current, resulting in less energy loss
Power formula with voltage and current
Power formula with voltage and current
Effect of increasing voltage when power is constant
Effect of increasing voltage when power is constant
Reduces current
Effect of step-down transformers on P.D.
Effect of step-down transformers on P.D.
Decrease potential difference
Location of step-down transformers
Location of step-down transformers
From National Grid to consumers
Reason for step-down transformers
Reason for step-down transformers
Consumer safety
Cause of energy loss in power cables
Cause of energy loss in power cables
Resistance of the wires
How to minimize energy loss in cables
How to minimize energy loss in cables
Use high potential difference