New servers, hooraaaay! More bandwidth, more power.
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How See below.
oooooooooooops wrong explanation !!!!!!look elcectro magnets are made of iron...temporary magnets...so when elecrtromagnet is switched off..iron stops workin and it looses it magnetism!!!!!!get my point?
https://studentforums.biz/index.php/topic,7946.msg210346.html#msg210346
Yo, anyone can help me with this question:May/June 2005, paper 1 , Question 27, what is that!!
Can anyone please clear doubt about magnetism. So ferrous materials can be magnetised (e.g. iron and steel). All ferrous materials can be magnetically induced (so both sides of a magnetic object attracts). However, a magent has poles. To make magnet, you place in d.c. current.I'm not sure, but am i right in saying that in magnetic induction, the thing being induced is not a magnet, because it does not have magnetic field lines?By the way, iron is magnetically soft, so loses magnetism easily right?
Noooo I wanna know if it was easy or difficult! So i can brace myself uno? I'm doing it in Saudi too! Which city are you in?
Please please can someone clarify thins, thanks!
I didn't really understand everything you said but yes to magnetise a material you wound a coil over it and pass a d.c. through the coil. And yes iron is magnetically soft thus loses magnetism easily and is used as the core of an electromagnet.Umm what else? Ferrous substances are the ones that have alot of Iron.. I dno if ALL of them can be magnetised thoughhope I helped
The great city of Riyadh lol. With Minarat-ar-Riyadh as my centre and an invigilator who scares the heck out of me evrytime I see him. You should never try to know how easy or hard a paper was. If it was easy, you'll get over-confident. If it was hard, you'll already be freaked out and u'll screw you're grade. Besides, it's a different varient too so it's useless to find out if the other varient was easy or hard...
So what's the difference between magentic induction and magnetising magnet then? Like passing through dc and stuff