Answer / nithi

manishk,you would have asked this question in the reverse
order as why current direction is always denoted in the
direction opposite to the elctron flow..
Because current is a flow of electron (we all
know).electron is a cause & current is the effect .Whenever
voltage is applied across the conductor ,the free electros
starts to flow through it, depend on the polarity of the
applied voltage.But for our theoretical calculations ,we
consider the current in the opposite direction .

Answer / vamshi kulkarni

As per the father of electronics 'Benjamen Freanklin'
conventional current law came out, actually current means
flow of charge through a closed conductor and now coming to
our point our assumption made so as that holes will travel
opposite to electron flow in conductor so for our analysys
purpose we always consider holes direction which is opposite
to electron flow direction.

Answer / wareagle

It's Not.

Answer / dileep

currents are two types 1).conventional current
2).directional current
if u take a semi conductors then current is due
to both of electrons and holes .electrons will flow towards
+ve terminal battery supply,in case of holes flows to -ve
terminal conventional current .in case of diodes arrow head
shows that conventional current i.e opposite to electron
current so in semiconconductors u are correct
but in case of metals current is due to
electrons only holes will not exit .direction of current is
same as voltage polarity

Answer / k.prakashchandra

The direction of conventional current is defined as the
direction of the flow of positive charges.Later,the charge
carriers were found to be electrons,posistrons ,or both in
opposite directions.In metal conductors the positive
charges are immobile and only 'negatively charged'electrons
flow.Because of electrons carry 'negative charge',the
electron motion in a conductor is the direction opposite to
that of conventional current.This convention ,though may
seem outdated ,is used worldwide.

Answer / k.prakashchandra

Because, electron is negatively charged

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