It is used as part of the signalling system, so that the rail comapny knows where the trains are.
Yes, electricity can flow through metal.
Electricity flow through a wire as a result of the movement of electrons and hols.
Electricity does not flow in an open circut
Why doesn't? Is that what you mean? If so it is because then like a subway it will use a tone of energy always has to have electricity running threw the track it is also a danger to pedestrians and cars or anything like animals ext. We are better off running the trains on other fuels.
I don't know what "iron gold" is, but electricity will flow through any metal pretty well.
current electricity is where electrons flow through a conductor.static electricity electrons do not flow
Plastic
through ions
An electron is electricity as we know it. Electrons flow through a conductable element and that is electricity.
Electricity cannot flow through materials that are non-conductive, such as rubber, glass, plastic, and wood. These materials do not allow the easy movement of electric charges, which prevents the flow of electricity.
An object that does not allow electricity to flow through easily is an insulator. It is so hard that it often won't go through at all. Sometimes you find an exception, like lightening. There is nothing that electricity cannot flow through altogether.
Titanium is a poor conductor of electricity.