CBSE Class 12-science Answered
abcd
Asked by mahantabibhutibhusan261 | 06 Nov, 2023, 09:04: PM
Expert Answer
Initially the electric dipole is at stable equilibrium position. It means electric dipole is aligned with electric field ,
i.e direction of electric dipole is parallel to electric field. Potential energy is minimum at stable equilibrium position.
When the electric dipole is rotated to unstable equilibrium position means it is rotated to 180o from equilibrium position.
In unstable equilibrium position , direction of electric dipole is anti-parallel to the direction of electric field .
Workdone to rotate the electric dipole is equal to the potential energy at unstable equilibrium position.
Potential energy U of electric dipole at an agnular position θ from stable equilibrium position is
where p is electric dipole moment andE is electric field intensity .
POtential energy at angular position 180o is
Hence work done W to rotate electric dipole from stable equilibrium position to
unstable equilibrium position is
Answered by Thiyagarajan K | 07 Nov, 2023, 12:13: AM
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