What is drift current?

what is drift current ?

When a voltage is applied to a semiconductor or conductor

The free electrons try to move in a stregth line towards the positive terminal of the battery

The election moving towards positive terminal collide with the atom of semiconductor and along its way

Each time the electron strike an atom and it resound in a random direction

But still the Applied voltage make the electron drift towards the positive terminal

Due to this drifting process a current comes and it is called drift current

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