In case of electric trains how is the circuit completed?

In electric trains, circuit gets completed through tracks only which work as return conductor. Overhead wire is on 25 KV( in few cases this voltage is different) with respect to earth or tracks. read more

In electric trains, circuit gets completed through tracks only which work as return conductor. Overhead wire is on 25 KV( in few cases this voltage is different) with respect to earth or tracks. Have you ever thought that your domestic supply of 230 Volts, it is also grounded so phase voltage is 230 w.r.t. earth. read more

Ground does not complete the circuit. For safety reasons, the neutral wire in your house is connected to true earth ground, that is a metal stake driven a certain distance into the ground, depending on local and/or electrical codes. This is normally done at the nearest transformer to your home. read more

Lesson 4: Complete Circuits Introduction. In this lesson we'll look at why a circuit needs to be unbroken for it to work. We'll also look at switches and short circuits. This may seem like a simple topic but there are quite a few subtleties to grasp. read more