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Electric potential at a point in an electric field is
the amount of work done in bringing a unit positive charge from infinity to the
point.
(i) Electric potential is a scalar
quantity.
(ii) S.I. unit:
Volt(V).
(iii) A positive charge in a field
moves from higher potential to lower potential whereas an electron moves from
lower potential to higher potential when left free.
(iv) Work done in moving a charge
q through a potential difference V is W = qV joule.
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