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25 Jun 2008 00:26:47 IST
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wheater there is electric field inside a conductor .?
If no . how does electric field then contribute to the acceleration of the electrons ??
plz give and appropriate reason for this ..
i m really confused.?
rates assured .
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http://www.goiit.com/posts/list/electricity-electric-field-problem-44429.htm#224708
ur ans may lie here
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25 Jun 2008 00:52:22 IST
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plzz comment ..
its urgent
!!
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25 Jun 2008 00:56:39 IST
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wat is the problem?
wat do u mean by accelarating of electrons?
they will accelarate on surface only when an external electric field is present(in case of conductor)
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25 Jun 2008 00:59:17 IST
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electric feild inside the conduter is 0 only in electrostatic condition!!!!!!!!!!!!!!!!!!!!
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25 Jun 2008 01:01:12 IST
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i had said external electric field..............plz see that.............
in electrostatic cond it is 0 inside the conductor
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25 Jun 2008 01:34:01 IST
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So what it would be the electric field inside a conductor between a certain potential diffrence ?
and the electrons would be in random motion in the entire volume of the conductor . ?
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25 Jun 2008 23:18:52 IST
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see under electrostatic conditions there is no electric fiels inside thef conductor....why???
because electonsget accumulated at the surface in such a way that electric field vector of the fielfd produced is such that it is equal and opposite to the external field and hence it is zero(nice explanation is given in hc verma)
but if we make a patha for the accumulated electron to flow..they will flow as soon a s they reach tha hypothetical surface(now)..hence electric field caused the drift of electron...
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B.Tech CSE, ISMU |
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29 Jun 2008 01:04:39 IST
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so that means electrons dont flow within the volume of the conductor.......
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29 Jun 2008 01:07:08 IST
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plz comment ....lets make everything clear ....
plz keep posting
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29 Jun 2008 01:35:28 IST
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c
d elctric field inside a conductor is zero
wen an xternal feild is applied then induction takes place inside d conductor and negative and positive charges get seprated and internal ectric field is created bt very soon (couple a milii sec) this int field gets = to d xtrnal field
bt c if d xternal field is to d left d intrnal field is towards rite
so they cancell each other
thus currnt inside =zero...
this is applicable evn wen their is no xternal currnt coz d tym for this 2 happn is very small 
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walk as if u dont care who rules d world
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B who u r and say wat u feel ......
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29 Jun 2008 08:37:01 IST
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@zohairsayyid
current flows through entire volume of counductor..
if we apply electric field parallel to the courved surface of the cylinder..electons would accumulate at one of the ends of the cylinder...
that is what i was trying to say in my previous post..
if we provide a path for the electrons to flow at the flat surface of the cylinder, they will flow from the flat surface of the cylinder...but inside the cylinder they flow through the entire volume..
hope its clear now..
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B.Tech CSE, ISMU |
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29 Jun 2008 19:09:17 IST
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ya man its damn clear ......
thanx every body ...........
but plz be keep posting every single opinion is invited ..
!!!
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4 Jul 2008 00:53:43 IST
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hey yaaar ,,,
sorry but ,,,,,
one more question ,
how does the electric field and the potential difference are related in context with the drift velocity ...
rates assured ....
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4 Jul 2008 13:54:57 IST
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when a conductor is placed in an external electric field, free electrons inside the conductor start accelerating opposite to the direction of electric field.these electrons start collecting at one side of the conductor,this side acquires -ve charge nd the other side has collection of +ve charge. Due to these induced charges,an induced electric field starts flowing. as soon as the external electric field becomes equal to the induced E.F.these opposite directional fieldscancel each other and electrons in the conductor stop accelerating .
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30 Jul 2008 23:10:33 IST
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hey guys ...
does the potential gradient has to do anything to do with it .......
i.e /............
E= - dV/dr
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