A molecule with a dipole moment p is placed in an electric field of strength E. Initially the dipole is aligned parallel to the field. If the dipole is to be rotated to be anti-parallel to the field, the work required to be done by an external agency is
– 2pE
-pE
pE
2pE
As we have learned
Unstable Equilibrium -
- wherein
here q = 180o
Option 1)
– 2pE
Option 2)
-pE
Option 3)
pE
Option 4)
2pE
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