Siding
Siding
Siding
Two toy electric trains running on the same track are connected in parallel because they both get energized from DC impressed across the two rails they ride on.
A compound word for train tracks would be railroad or railroad tracks.
train track
According to the tfl website, this w/e the Northern Line has "Good Service" so there should be trains running, even if the lines [of track] are static (not running) in the tunnels.
The magnetized coil running along the track is typically referred to as the linear induction motor (LIM). It works by inducing eddy currents in a conductive surface, such as the track, to generate motion in the form of linear propulsion for transportation systems like Maglev trains or roller coasters.
railroad
Railroad
The short answer is yes. Rail wear is cause by the friction of the train wheels running over it. The heaver the trains that run over a track the faster it wears out. Curves wear faster then strait track.
It varies, but in general "metro trains" are electric trains, with power in every car.The power is usually DC and is supplied via a "third rail" (usually to the side of the running rails).