why does electric current always flow from areas of negative charge to ares of a positive charge

Question

gebooors · Answer

In metals, electrons carry charge and electrons travel
Towards positive electrode. direction of current is from positive to negative.

ybarrap · Answer

The flow of current is cause by the electric field in the metal. When there is a potential difference, positive charge will go from the positive terminal to the negative, because of the electric field between the two potentials. Similarly, negative charge will go from the negative to the positive for the same reason.

Does this make sense?

nincompoop · Answer

IT does NOT make sense

gebooors · Answer

Ybarrab is right. In solutions which contains ions,
Charge is transferred in same way. Cations travel
To positive anode and anions to negative cathode.

ybarrap · Answer

It's true, a magnetic field affects a moving charge, the force of which is in a direction perpendicular to the movement of the charge's velocity. However, that is only one way. An electric field field can also effect a charge. The result is a force parallel to the direction of motion, which is another way to answer the question on this thread. The force $\mathbf{F}$ acting on a particle of electric charge $q$ with instantaneous velocity $\mathbf{v}$, due to an external $electric field$ $\mathbf{E}$ and magnetic field $\mathbf{B}$, is given by $$ \mathbf{F} = q\left(\mathbf{E} + \mathbf{v} \times \mathbf{B}\right) $$ http://en.wikipedia.org/wiki/Lorentz_force Note that a magnetic field can never add kinetic energy to the charges, while this is not true for electric fields acting upon them. A striking example of a charge moving in an electric field is through electrostatic discharge, whereby a potential difference between two objects is so large that it results in a "shock" as when you touch a metal door handle after walking on a carpet with leather shoes. Here the electric field exceeds 4–30 kV/cm in free space. http://en.wikipedia.org/wiki/Electrostatic_discharge Other forms of electrostatic discharge include lightning an corona discharge. Hope fully this make things a little more clear.