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

Magnetism

Cool goIITian

Joined:	27 Nov 2007
Post:	54

2 Jan 2008 20:26:41 IST

0 People liked this

337

help me please - conceptual doubt

None

why do new N and S poles develop when a bar magnet is broken??

Share this article on:

Comments (4)

Tarin Bansal

Blazing goIITian

Joined: 27 Jul 2007

Posts: 3134

2 Jan 2008 22:11:49 IST

Like 2 people liked this

WELL,
U can do it like this-
We know that a bar magnet can be assumed to a ring carrying current and vice versa. Now we know that is current is flowing in ring, we can define N and S poles on the opposite faces of the ring.
Which also justifies that if current is flowing in a ring, there HAVE TO BE 2 poles. It cannot be monopolar.
Now suppose the broken piece of bar magnet as a new ring. Now in this broken piece, either N or S pole is already present at one end which means that we can asssume current flowing in the ring and if current is flowing then on the opposite fave, there has to be the other pole of the magnet.

In the figure below, I hav shown a ring carrying current from both ends seperately so that U hav no confusion as to how to find poles in a ring carrying current.

Ashwini

Blazing goIITian

Joined: 4 Nov 2007

Posts: 1524

2 Jan 2008 22:14:55 IST

Like 0 people liked this

gud ans, @ tarinbansal !!! i agree wid u!!

Tarin Bansal

Blazing goIITian

Joined: 27 Jul 2007

Posts: 3134

2 Jan 2008 22:16:51 IST

Like 0 people liked this

DHANYAWAAD.

harsh _27

Blazing goIITian

Joined: 21 Apr 2007

Posts: 897

4 Jan 2008 14:44:23 IST

Like 0 people liked this

'coz magnetic field lines are continuous.....and form closed loops.

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