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

Magnetism

Scorching goIITian

Joined:	26 Jul 2008
Post:	290

4 Mar 2010 19:33:55 IST

0 People liked this

466

any one who is online reply to hc verma 2 chapter 34, 22 problem

None

any one who is online reply to hc verma 2 chapter 34, 22 problem

Share this article on:

Comments (2)

siDDhESwaR MuKhErjEE

Blazing goIITian

Joined: 15 Nov 2009

Posts: 608

11 Mar 2010 09:49:24 IST

Like 0 people liked this

When the current is switched on, at t=0 we have varying current. Thus an electromagnetic force F=BIL acts on the wire. Here B is the magnetic field intensity, I is the current and L is the length of the wire................Due to this force the wire starts moving. As soon as the wire starts moving, the frictional force comes into play. Also due to its movement an induced emf is set up in the circuit(from flemings right hand rule the direction of this emf is opposite to the original emf source)...........thus the movement of the wire is opposed, and it comes to a stop...................now F*L = uMgx.........thus x=FL/(uMg)

edison

Forum Expert

Joined: 19 Oct 2006

Posts: 7452

29 Jun 2011 16:52:15 IST

Like 0 people liked this

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