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  • Help me please, An electric dipole has the magnitude of its charge as q and its dipole moment is p. It is placed in a uniform electric field E. If its dipole moment is along the direction of the field, the force on it and its potential energy are res

An electric dipole has the magnitude of its charge as q and its dipole moment is p. It is placed in a uniform electric field E. If its dipole moment is along the direction of the field, the force on it and its potential energy are respectively

  • Option 1)

    2q E and minimum 

  • Option 2)

    qE and pE

  • Option 3)

    zero and minimum 

  • Option 4)

    qE and maximum 

 

Answers (1)

As we have learned

Unstable Equilibrium -

\Theta = 180^{\circ}

\tau = 2PE

U_{max}= PE

- wherein

 

 In the given condition angle between \vec{p} and \vec{E} is zero. Hence potential energy U= -pE \cos 0= -pE= min

also in uniform electric field F_{net}=0


Option 1)

2q E and minimum 

Option 2)

qE and pE

Option 3)

zero and minimum 

Option 4)

qE and maximum 

Posted by

Vakul

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