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  • Try this! 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 exter

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

  • Option 1)

    – 2pE

  • Option 2)

    -pE

  • Option 3)

    pE

  • Option 4)

    2pE

 

Answers (1)

best_answer

As we have learned

Unstable Equilibrium -

\Theta = 180^{\circ}

\tau = 2PE

U_{max}= PE

- wherein

 

 

W= PE(1-\cos \theta) here q = 180o

 W= PE(1-\cos 180 \degree) = PE[1-(-1)]=2PE  

 


Option 1)

– 2pE

Option 2)

-pE

Option 3)

pE

Option 4)

2pE

Posted by

Aadil

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