Magnectic force on current carrying wire

AI Thread Summary
A current-carrying wire experiences a magnetic force despite having a net charge of zero because it consists of moving negative charges (electrons). The force on the wire can be described by the equation dF=I*dl x B, where the current represents the flow of these charges. While the positive charges in the wire remain stationary and do not experience a magnetic force, the moving electrons do feel the force due to their motion in the magnetic field. The discussion emphasizes that the concept of net charge is not relevant to the magnetic force experienced by the current. Understanding this principle does not require delving into Lorentz transformations or relativity.
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Homework Statement



The net charge in a current-carrying wire is zero.Then,why does a magnetic field exert a force on it?

Homework Equations



dF=I*dl x B

The Attempt at a Solution


if we take a small portion of wire the net charge is zero,so if i take the frame of electrons that is I am moving so i have a charge with me..and i get a force due to it..i don't know weather my explanation was correct or wrong??

dont go to lorentz transformation to explain..(in case needed)..because i don't have the idea of relativity theory in maxwell equations..im saying this because i had read many post on similar kind of topic where every one finally explained with lorentz transformation..saying that in one frame its magnetism..its electricity in another frame..:confused:
 
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What does the net charge have to do with it? A moving charge will experience a force in a magnetic field via F = qv x B. The current is just a lot of negative charges moving, so the current should feel the same force. The positive charges are stationary, so there is no counter-balancing magnetic force on them.
 
yes..thank u...
 

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