They are already free in the conduction band of metals, they are just not moving until forced to either by a battery or the magnetic field in a turning generator/alternator.
When a woman experiences an electrical shock, the electrons come from the electrical source that she comes into contact with. The source could be a faulty electrical outlet, a damaged appliance, or exposed wiring, which allows the flow of electrons through her body, resulting in an electrical shock.
If you come in contact with high speed electrons from an electron gun, you will get an electrical shock.
it was JIMMY CARTER:)
The electrons used in the electron transport chain come from the breakdown of molecules like glucose during cellular respiration.
The electrons from the electric shock come from the flow of electrons through a conductive material, such as a wire or electrical appliance. When the woman comes into contact with the electric source, this flow of electrons passes through her body, causing the electric shock.
When two neutral electrical charges come in contact, there is no transfer of electrons between them. They will remain neutral and there will be no repulsion or attraction between them.
protons and electronsElectrons.
water
I assume you are referring to electrical resistance. Basically, some electrons in a current will collide with atoms or other electrons, and lose energy in the process. This energy, of course, has to come from somewhere - so the current loses energy.
In an electrically neutral, there are as many oppositely charged particles as the electrons. Therefore, the net electrical charge come out to be zero.
During non-cyclic electron flow, electrons come from water molecules that are split by photosystem II. These electrons replace the ones lost by photosystem II as they are passed along the electron transport chain.
The electrons moving along the inner membrane of the mitochondria come from molecules such as NADH and FADH2, which are generated during the citric acid cycle and glycolysis. These molecules donate their electrons to the electron transport chain to drive the production of ATP through oxidative phosphorylation.