• Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

why electric field appears here..

Status
Not open for further replies.

ericgibbs

Well-Known Member
Most Helpful Member
http://i31.tinypic.com/2rnvvhf.jpg
the electrons and protons are separated till
electric field appears and stops the separations

i cant understand why suddenly electric field apears
from what principle it appears.
hi,
Looking your diagram, I dont see any mention of 'protons'..?

The protons are in the nucleus with the neutrons.
 

Boron

New Member
When the conductor is moved through the magnetic field, the charged particles within the conductor feel a magnetic force, equal to qvb. This magnetic force causes the electrons inside the atoms to "migrate" to one end of the rod. Having migrated to one end because of the force, that end is now negatively charged because it contains an excess of electrons. The other end of the conductor is now positively charged because the electrons have migrated away leaving a net positive charge.

The thing is that once we start having seperations of charge like this, we start to create electric fields. These electric fields that form because of the accumulation of charge cause and attraction between the postive and negative, essentially countering the magnetic force that was causing the initial seperation.

When enough charge has been accumulated in either end due to the magnetic force, the electric field will reach a point where it perfectly balances the magnetic force with its own electric one. This is equilibrium. The forces are now in balance and the charges will no longer increase.
 
Status
Not open for further replies.

EE World Online Articles

Loading
Top