Qualification > Sciences
ALL PHYSICS DOUBTS - POST HERE !!
Ivo:
--- Quote from: Ivo on May 26, 2010, 10:51:42 am ---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?
--- End quote ---
Please can someone answer my qu. thanks a lot!
Dana:
--- Quote from: Kimo Jesus on May 26, 2010, 10:57:14 am ---its C
why? caz elctro magnets should be magnetic whn the current is switched off !
and which attraacts more A or C ..whn current is on? C
im doin the exam in 2 hours an haa half
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Thanks :)
Dana:
--- Quote from: deadman786 on May 26, 2010, 10:57:45 am ---Don't worry Lad. It's still 12:55 PM in KSA and my paper is at 3 PM. So there's still A LOT of time left for everyone to get rid of paper 1 :D :D.
(Don't worry I don't want to know if it was hard or easy or whatever. If I fail, I'll fail on my own. It I pass, I'll pass on my own. Way of the Samurai :D :D :D)....
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Noooo I wanna know if it was easy or difficult! So i can brace myself uno? :P
I'm doing it in Saudi too! Which city are you in?
holtadit:
How ???
See below.
Vin:
--- Quote from: Ari Ben Canaan on May 26, 2010, 11:00:27 am ---How ???
See below.
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you can place it in a known Temperature .. to calibrate
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