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![[Post New]](/templates/default/images/icon_minipost_new.gif) 23 Aug 2007 17:41:01 IST
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Can someone please explain how to select an Amperetical loop to find
magnetic fields
Can explain using the following fig.
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23 Aug 2007 23:23:39 IST
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well the same Q i was going 2 ask ....but suddenly i saw it before ur name well 2day i tried 2 understand it frm ..resnick/halliday . &university physics...no sooner i get the ans i will certainly tell u .&if u get it before my reply please do send it at my niudge book...
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24 Aug 2007 00:55:14 IST
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i found it........the image is not displayed well..still
draw a imaginary loop around the wires and curl right hand pointing ur 4 fingers along the dir of integration...&thumb pointing upwards.if ur thumb is along the dir of i..then assumeit+i1..viseversa with -i2 ( if) i mean if a situation is like in 2 wires i is flowing in opp dir.... .now in the formula where their is i enq...there u write +i1-i2 that is net i......hope u got it and now u will hav 2 rate me .
if u still hav any doubts relating it u may ask me ,or rather i wuld prefer u study this proof from resnick....it is of 2 pages &i hav given u the jist ..
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