Home » Ask & Discuss » Physics. » Magnetism « Back to Discussion



Magnetism

biki ....'s Avatar
Blazing goIITian

Joined: 5 Jun 2007
Post: 978
21 Jan 2008 18:48:40 IST
0 People liked this
9
541 View Post
emi .... conceptual doubt
None

sir,
when a conducting rod moves in a magnetic field as shown, the positive charges accumulate at A and negative charges at B. This creates an electric field inside the conductor. But in electrostatics, almost everything was based on the fact that no electric field is developed inside a conductor.
How is it possible ???
Isn't it contradicting ???
 
I may sound silly, but please take up the pains to explain me ... please
 
 


Share this article on:

Comments (9)


Hot goIITian

Joined: 2 Dec 2007
Posts: 120
21 Jan 2008 20:30:39 IST
0 people liked this

SEE that was true onlr 4 ELECTROSTATIC conds...ie when the charges r at rest

Hot goIITian

Joined: 2 Dec 2007
Posts: 120
21 Jan 2008 20:32:11 IST
0 people liked this

while teaching electrostats ninja sir cleared this pt and said that students doubt when we take up emi...he was true perhaps
Pratyush Pande's Avatar

Cool goIITian

Joined: 2 Jan 2008
Posts: 58
21 Jan 2008 20:45:43 IST
2 people liked this

see in elecstat the feild inside a conduc is zero due to  cancelling of the field outside and the one due to the induced charges just below the surface....the basic thing was the force acting on the charged particles which eventually led to cancellation of electric field due to their accumulations...while in emi the force acts on the particle that is electron making it move accordingly but this force leads to accumulation of charges leading to an electric field getting produced force due to which at a certain value becomes equal to the magnetic force leading to development of emf......moreover ther is no field acting from outside which can lead to cancellation inside to give zero field........
Krishna Gopal Singh's Avatar

Forum Expert
Joined: 29 Dec 2006
Posts: 5153
21 Jan 2008 21:34:44 IST
1 people liked this

Yes that is for static condition. Here the charges are moving with the rod
biki ....'s Avatar

Blazing goIITian

Joined: 5 Jun 2007
Posts: 978
21 Jan 2008 21:42:59 IST
0 people liked this

"....the basic thing was the force acting on the charged particles which eventually led to cancellation of electric field due to their accumulations...."



WHAT DOES IT MEAN ???? MAKE IT CLEAR PLEASE !!!
mohit patni's Avatar

Blazing goIITian

Joined: 3 Apr 2007
Posts: 593
21 Jan 2008 21:48:22 IST
0 people liked this

in electroststics the electric field inside a conductor gets canceled by opposite inner electric field ...
but it not the case in emi....
Pratyush Pande's Avatar

Cool goIITian

Joined: 2 Jan 2008
Posts: 58
22 Jan 2008 21:57:59 IST
1 people liked this

see Biki the charges aquire their respective positions in an electric field due to the forces acting on them...now they eventually align themselves in such a manner that the electric field gets cancelled on the inside.....so basically the charges move according to the forces acting on them and not purposely to cancel the electric field...it but eventually gets cancelled due to their positions...
biki ....'s Avatar

Blazing goIITian

Joined: 5 Jun 2007
Posts: 978
23 Jan 2008 18:23:33 IST
0 people liked this

@ pratyush.pande
refer to your first answer and then see my next answer
biki ....'s Avatar

Blazing goIITian

Joined: 5 Jun 2007
Posts: 978
23 Jan 2008 18:24:44 IST
0 people liked this

okay then

".....leading to an electric field getting produced force due to which at a certain value becomes equal to the magnetic force leading to development of emf......moreover ther is no field acting from outside which can lead to cancellation inside to give zero field........"

where does field acts from outside in electriostatics ??? ..which leads to cancellation of field inside...

u wrote that externl field is absent in emi ... but where is it present in electrostat.



Quick Reply


Reply

Some HTML allowed.
Keep your comments above the belt or risk having them deleted.
Signup for a avatar to have your pictures show up by your comment
If Members see a thread that violates the Posting Rules, bring it to the attention of the Moderator Team
Free Sign Up!

Preparing for IIT-JEE ?

Arihant Revision Package for IIT JEE - Books, Practice Tests + Rank Predictor


@ INR 1,995/-

For Quick Info

Name

Mobile No.

Find Posts by Topics

Physics.

Topics

Mathematics.

Chemistry.

Biology

Parents

Board

Fun Zone

Sponsored Ads