Qualification > Sciences
ALL PHYSICS DOUBTS - POST HERE !!
Dana:
--- Quote from: 6394 on May 26, 2010, 10:53:37 am ---@ kimo jesus n dana wen r u ppl gettin ovr wid phy ppr 1
because m done ??!11??!!
--- End quote ---
My exam's in about 2 hours
how was it???
Weaam:
Can anyone tell me how to magnetise steel?
And how to demagnetise it?
Thank You! ;D
WARRIOR:
--- Quote from: Dana on May 26, 2010, 10:51:37 am ---What abt this one ::) I really don't get it? ???
Four metal rods are placed, in turn, inside a coil of copper wire.
Which rod would be the most suitable to use for the core of a coil in a circuit breaker?
number of paper clips picked up when there is a current in the coil: number of paper clips still attracted when the current is switched off:
A 1 0
B 20 2
C 35 0
D 35 30
--- End quote ---
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
Ivo:
--- Quote from: weaam on May 26, 2010, 10:56:58 am ---Can anyone tell me how to magnetise steel?
And how to demagnetise it?
Thank You! ;D
--- End quote ---
https://studentforums.biz/index.php/topic,7946.msg210346.html#msg210346
the_grim_reaper:
--- Quote from: 6394 on May 26, 2010, 10:53:37 am ---@ kimo jesus n dana wen r u ppl gettin ovr wid phy ppr 1
because m done ??!11??!!
--- End quote ---
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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