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I'm revising p3 and i'm stuck on this question!
Me & my friend are revising P3 as well, and we came across this question.
And the reason for this being is so that it prevents a short crcuit from occuring.
Good luck for today afternoon! (:
isnt it to stop energy loss through heat?
ah thank you so much!
haha thank you, you too! gotta love last minute revision!