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![[Post New]](/templates/default/images/icon_minipost_new.gif) 5 Mar 2008 18:22:26 IST
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yes, eddy currents will play a role. But while eddy currents are random, the current im talking about has a specific direction. But the question arising is-
when the momentary current due to capacitor -like circuit stops flowing, will accn still be less than g due to eddy currents?
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5 Mar 2008 18:49:29 IST
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it'll still b less than g eddy i opposes....
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5 Mar 2008 19:01:06 IST
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Ok heres a confirmed answer, its an mnr 1987 prob by the way. G.c.Aggarwal says that if the ring above has a slot(cut somewhere) , an emf will be induced but a current will not be flowing ; NO current NO force and magnet falls with acceleration g
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5 Mar 2008 22:00:38 IST
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ok then ashwin, answer this-induced emf means electric field. If electrons are not flowing, then which force is balancing the field?
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"A perfect mind is a treasure unsurpassed."
"It is said that human beings have 5 senses. That's because most of them lack the 6th - common sense."
-- astatine19 --
http://astatine19.blogspot.com/
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5 Mar 2008 23:28:15 IST
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emf induced means where;s induced i ...?? must be there
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" From ashes a fire shall be woken From shadows a light shall spring " ---Tolkien
" Throughout the centuries there were men who took first steps down new roads armed with nothing but their own vision. " --- Ayn Rand
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5 Mar 2008 23:29:39 IST
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this is getting more and more confusingggg..........
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Remember Cedric. Remember, if the time should come when you have to make a choice between what is right and what is easy, remember what happened to a boy who was good, and kind, and brave, because he strayed across the path of Lord Voldemort. Remember Cedric Diggory.
Albus Dumbledore
Goblet of Fire, Chapter 37, Page 724
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5 Mar 2008 23:41:54 IST
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ev pradeep's gives d ans as g.....
bt i am nt sure whether there needs to be a completed circuit for the flow of current when a p.d exists b/w two points on the ring.......
if there is flow of current then accn shud b less than g......
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"Many of the things you can count,dont count....
Many of the things you cant count,really do count...."-Albert Einstein
"The important thing in science is not so much to obtain new facts as to discover new ways of thinking about them"-William Bragg
"An inexplicable fact is infinitely preferable to an incomprehensible mystery"-F. Soddy
RISHIPRATIM MAZUMDAR
NIT DURGAPUR
1ST YEAR,ELECTRONICS AND COMMUNICATIONS
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14 Mar 2008 13:48:37 IST
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WHEN THE MAGNET IS DROPPED THROUGH THE RING THEIR IS CHANGE IN MAGNETIC FLUX LINKING THE RING DUE TO WHICH THEIR IS INDUCTION OF CURRENT IN THE RING WHICH OPPOSES THE MOTION OF THE MAGNET THUS ACCELERATION IS LESS THAN g.
BUT WHEN THE SAME RING IS CUT THEIR WILL BE OPEN CIRCUIT DUE TO WHICH EMF DOES INDUCE BUT THEIR IS NO FLOW OF CURRENT THUS THE BAR MAGNET FALLS WITH ACCELERATION EQUAL TOg.
hope satisfied
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14 Mar 2008 14:53:47 IST
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any1 heard of motional emf?
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