Why is there force on a current carrying conductor?

[quawa99]

I know that charges experience a force when they are moving with respect to a magnetic field , but in case of conductor how is the force on the freely flowing electrons transferred to the structure of the conductor?

 

[mikeph]

The electrons aren't freely flowing. They're bound to the metal lattice. And as they drift, they interact sufficiently quickly with the lattice to transfer their momentum to it.

 

[jtbell]

Electrons do tend to move towards one side of the conductor. This produces a transverse potential difference which impedes further such motion. This potential difference can be measured, and is known as the Hall effect:

http://hyperphysics.phy-astr.gsu.edu/hbase/magnetic/hall.html

 

[Doc Al]

I know that charges experience a force when they are moving with respect to a magnetic field , but in case of conductor how is the force on the freely flowing electrons transferred to the structure of the conductor?

As the electrons get pushed to the side, a positive charge (from the lattice) is left behind. The electrostatic field created allows the magnetic force to be "transferred" to the lattice.

(jtbell beat me to it!)