| Topic: |
Science > Physics |
| User: |
"" |
| Date: |
23 May 2007 12:21:37 PM |
| Object: |
Electromagnetic induction |
When a magnetic north pole is introduced into a coil and removed away
from it repeatedly (as in Faraday's experiment), how does the induced
emf vary with time? Is it sinusoidal variation or in the form of a
steep jagged curve?
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| User: "Androcles" |
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| Title: Re: Electromagnetic induction |
23 May 2007 04:53:29 PM |
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<vikraman.choudhury@gmail.com> wrote in message
news:1179940896.968063.130580@a35g2000prd.googlegroups.com...
: When a magnetic north pole is introduced into a coil and removed away
: from it repeatedly (as in Faraday's experiment), how does the induced
: emf vary with time? Is it sinusoidal variation or in the form of a
: steep jagged curve?
Obviously that depends how the magnet is introduced and withdrawn.
If you push it in fast and withdraw slowly you'll get this |\
If you push it in slowly and pull it out rapidly you'll get this /|
If you oscillated it with a crank you'll get a sinusoid.
http://www.androcles01.pwp.blueyonder.co.uk/Smart/meter.gif
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