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Mains electricity Flashcards | StudBud
Mains electricity
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Why does the National Grid use a very high potential difference of around 400,000V?
A
Increasing the p.d. means more power can be transmitted at once
B
To kill birds that land on power lines so they don't get covered in poo.
C
The higher the voltage the safer it is.
D
Increasing the p.d. decreases the current and reduces heat loss.
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