Is called an electrical circuit.
An electrical current will be generated in the wire if the wire crosses the magnetic lines of force.
It is rubber that is around a electrical wire so you dont get shocked
To answer this question more information needs to be supplied.
The electrical terminology of a wire with no insulation on it is a bare wire.
A magnetic field can induce an electrical current in a wire.
Electrical wire is the type of wire that is used in electrical equipment. To strip the wires, you need to use wire strippers. There is also special tape called electrical tape that is used to secure the wire.
To keep you from getting shocked and resist electrical leakage