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Define Electric field ....

Define Electric field .

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The electric field at the point P at a distance r from the point charge q is the force experienced by unit charge and is given by `vec(E)=(vec(F))/(q_(0))=(kq)/(r^(2))hatr=(1)/(4piepsi_(0))(q)/(r^(2))hatr`
(ii) Here `hatr` is the unit vector pointing from q to the piont of interest P. The electric field is a vector quantity and its SI units is Newton per Coulomb `(NC^(-1))`.
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