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![[Post New]](/templates/default/images/icon_minipost_new.gif) 3 Mar 2008 22:17:31 IST
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In ISC buk,its given dat toroid is a magnet with no north and south poles.Its magnetic moment is 0.I didn understand the ans. given.
So when i searched on net,its given dat toroids introduce permeability, that means an increased inductance for a given number of turns.
Whats de actual ans. den??
And is it possible for magnets 2 hav no north and south pole??
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MaNuTd RoXxXx..MaNuTd 2 WiN PrEmIeR LeAgUe ThIs SeAsOn ToO AlOnG WiTh ChAmPiOnS LeAgUe.....HaiL RoNaLdO ...HaiL LaMpArD... |
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3 Mar 2008 22:47:54 IST
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plz sum! ans. this....
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MaNuTd RoXxXx..MaNuTd 2 WiN PrEmIeR LeAgUe ThIs SeAsOn ToO AlOnG WiTh ChAmPiOnS LeAgUe.....HaiL RoNaLdO ...HaiL LaMpArD... |
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3 Mar 2008 22:58:27 IST
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sum1!!!
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MaNuTd RoXxXx..MaNuTd 2 WiN PrEmIeR LeAgUe ThIs SeAsOn ToO AlOnG WiTh ChAmPiOnS LeAgUe.....HaiL RoNaLdO ...HaiL LaMpArD... |
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3 Mar 2008 23:18:40 IST
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Thoda toh bhaav do yaar..
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MaNuTd RoXxXx..MaNuTd 2 WiN PrEmIeR LeAgUe ThIs SeAsOn ToO AlOnG WiTh ChAmPiOnS LeAgUe.....HaiL RoNaLdO ...HaiL LaMpArD... |
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3 Mar 2008 23:19:55 IST
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a toroid does not have poles because its net magnetic moment is zero. but it has a magnetic moment which gets cancelled completely due to radial symmetry ( i.e. it does not have any ends where there can be a pole )
there can be a "magnet" without poles if its net magnetic moment is zero. it can have moments which gets completely cancelled.
I dont understand that thing u found on the net.
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3 Mar 2008 23:21:30 IST
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http://www.electronics-tutorials.com/basics/toroids.htm
hav a look at this...
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MaNuTd RoXxXx..MaNuTd 2 WiN PrEmIeR LeAgUe ThIs SeAsOn ToO AlOnG WiTh ChAmPiOnS LeAgUe.....HaiL RoNaLdO ...HaiL LaMpArD... |
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4 Mar 2008 20:32:23 IST
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u could view the toroid as made up of many thin circular magnetic discs arranged one after the other in a circular fashion. The magnetic moments of the discs will cancel out.
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