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प्रश्न
Arrangement of an oxygen ion and two hydrogen ions in a water molecule is shown in the figure below.
Calculate the electric dipole moment of a water molecule. Express your answer in terms of e (charge on hydrogen ions), l and θ.
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उत्तर
P1 = P2 = e × l
P = 2p cos α
= `2 e xx l cos (theta/2)`
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