How electrical subway trains work?

Question

How electrical subway trains work?

Answer 1

Typically there is the well known 3rd rail, that the train is in constant contact with(aside from the two rails it rides on. It picks up the electricity form this rail This usually drives dc motors at the wheels.

Answer 2

electric train have two wire up side and each wire could not touch electric because but it can get electric from wire as per role of transfarmer because transfarmer kundli are not joint but get electriec from each other in this way electric train work.

if u thought they tought wire then due to gharsaan wire become hot and break