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secondary 4 | A Maths
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Hhgb gg
Hhgb Gg

secondary 4 chevron_right A Maths chevron_right Singapore

Why does the aluminium foil fall after being in contact with the iron?any kind souls can help? Ty

Date Posted: 2 years ago
Views: 175
Arnold K H Tan
Arnold K H Tan
2 years ago
Note that the iron is earthed. Earth has a limitless capacity to take in electrons or donate electrons. Concise: Electrons move from earth to the Al foil, to neutralise the excess positive charge. The Al foil has been discharged and falls off.
Hhgb gg
Hhgb Gg
2 years ago
Sorry what u mean by discharge tho?
As in no more charges left in al? Or?sry im confused
Arnold K H Tan
Arnold K H Tan
2 years ago
Yes. Its a term you have to be familiar with for the chapter. Discharged = charge has been removed from a charged object. The object has no net charge after.
Hhgb gg
Hhgb Gg
2 years ago
Even if the al were to be uncharged, it can still attract the iron?am i wrong to say this??
Arnold K H Tan
Arnold K H Tan
2 years ago
Why would be attracted to the iron if uncharged? If you think are correct, you must be able name the attractive force. Can you?
Hhgb gg
Hhgb Gg
2 years ago
Hmmm. There are situations whereby an uncharged material can still attract the positively charged or negatively charged object.
Arnold K H Tan
Arnold K H Tan
2 years ago
Of course... but is it relevant to this question?
Hhgb gg
Hhgb Gg
2 years ago
R u saying iron is uncharged or aluminium is uncharged?
Arnold K H Tan
Arnold K H Tan
2 years ago
Can a metal that is charged, remain charged, if earthed?
Hhgb gg
Hhgb Gg
2 years ago
Depends? I guess.
Cuz if it is earthing to remove excess positive charges, it will be CHARGED.
Arnold K H Tan
Arnold K H Tan
2 years ago
No depends... any conductor that is earthed, will be discharged or become electrically neutral.
Hhgb gg
Hhgb Gg
2 years ago
Can i dm u on ur instagram?
I hv alr dm
Thank u!
Arnold K H Tan
Arnold K H Tan
2 years ago
Sorry, I only entertain direct messages from my tuition students. Just post here for any tutor to attend to your questions, and so other students can learn, too.
Hhgb gg
Hhgb Gg
2 years ago
Wait but how is aluminium earthed tho?it is not connected to the wire i thought?
Arnold K H Tan
Arnold K H Tan
2 years ago
Al is earthed the instant it touches the iron bar.

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Arnold K H Tan
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