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

Magnetism

New kid on the Block

Joined:	8 Oct 2011
Post:	1

31 Oct 2011 16:53:25 IST

0 People liked this

392

explain the real reason behind electromagnetic induction.

Physics

explain the real reason behind electromagnetic induction.

Share this article on:

Comments (4)

ratan

New kid on the Block

Joined: 6 Dec 2011

Posts: 15

6 Dec 2011 15:01:41 IST

Like 0 people liked this

it is actually the opposition of a body towards change.... so when you change the flux on a loop.. it results in opposition the same way as in inertia (mechanics)

edison

Forum Expert

Joined: 19 Oct 2006

Posts: 7537

15 Feb 2012 12:08:18 IST

Like 0 people liked this

Faraday's Law

Any change in the magnetic environment of a coil of wire will cause a voltage (emf) to be "induced" in the coil. No matter how the change is produced, the voltage will be generated. The change could be produced by changing the magnetic field strength, moving a magnet toward or away from the coil, moving the coil into or out of the magnetic field, rotating the coil relative to the magnet, etc.

Faraday's law is a fundamental relationship which comes from Maxwell's equations. It serves as a succinct summary of the ways a voltage (or emf) may be generated by a changing magnetic environment. The induced emf in a coil is equal to the negative of the rate of change of magnetic flux times the number of turns in the coil. It involves the interaction of charge with magnetic field.

bvsakhil

New kid on the Block

Joined: 2 Mar 2012

Posts: 2

2 Mar 2012 18:05:16 IST

Like 0 people liked this

It is the rate of change of the amount of flux linking with the coil that causes the emf (Faradays law). It arises because charged particles, usually electrons, experience a force when moving relative to a magnetic field. In a conductor this has the effect of moving them to one side of the conductor and so creating a difference in 'voltage' across it.

itachsky gamov

Cool goIITian

Joined: 21 Mar 2012

Posts: 48

21 Mar 2012 12:04:10 IST

Like 0 people liked this

a body moving in B fild experience lorentz force on its charges..so the are separated on two endscausing emf indution..E induced due to changing B is due to more comlex non-conservative fields..

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