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Stuck here, help me understand: - Electrostatics - JEE Main-2

The torque acting on a dipole of moment \vec{p} in an electric field \vec{E} is

  • Option 1)

    \vec{p}\cdot \vec{E}

  • Option 2)

    \vec{p}\times \vec{E}

  • Option 3)

    zero

  • Option 4)

    \vec{E}\times \vec{p}

 
Answers (1)
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As we have learned

Torque Experienced by the dipole -

\vec{\tau }=\vec{P}\times \vec{E}

\vec{\tau }=PE\sin \Theta

\Theta =0^{\circ}    \tau =0

\Theta =\frac{\pi }{2}             \tau = max^{m}

- wherein

 

 torque is vector product of dipole moment and electric field

 


Option 1)

\vec{p}\cdot \vec{E}

Option 2)

\vec{p}\times \vec{E}

Option 3)

zero

Option 4)

\vec{E}\times \vec{p}

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