electrons or protons will only flow in a closed path, called an electric circuit?

Answer 1

Electrons is what flows in an electric circuit.

While current is the flow of the positive charge which is opposite the flow of electrons.

Answer 2

Yes for electrons. Protons do not flow to my knowledge. The laws of Kirchhoff and Ohm are useful here. They are used to give migraine headaches to college students, but they may be re-stated helpfully as follows: Kirchhoff: "Nobody is allowed to keep the electrons. They must go back where they came from. No exceptions." And then Ohm: "Electrons are very free-minded fellows and will go back following EVERY path available to them, but they are also lazy and more will go back on the path of least resistance." This explains the ground fault outlet in your bathroom. The electrons are supposed to come out one pin and back the other, but if you throw the hair dryer in the tub with grandma, some will take another path through grandma and down the drain. The GFI detects this imbalance and saves grandma. Kirchhoff is happy, Ohm is happy, and grandma is just a little surprised.

Answer 3

Electrons will not only flow in a closed circuit, can flow between differently charged bodies, like occur in rays or sparks.
Protons will not flow in any case of electric current.

Answer 4

A circuiit involves conductors. Electrons flow relatively freely in conductors and is what we call current. Protons are bound to the nuclei of the substance and generally don't particpate in the circuit.

Answer 5

If you think that protons are at rest then electrons are flowing.
If you think that electrons are at rest then protons are flowing.

It all depends upon the reference frame from which you observe the motion.

Further it is the drift velocity and not the actual motion of the charges.

Answer 6

electrons will flow to make current.

Answer 7

electrons