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A dipole is placed in a uniform electric...

A dipole is placed in a uniform electric field with its axis parallel to the field. It experiences

Text Solution

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The correct Answer is:
neither a net force nor a torque
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Knowledge Check

  • When an electric dipole is placed in a uniform external electric field parallel to the field, it will experience ______

    A
    a torque but no force
    B
    a force but not torque
    C
    a torque as well as a force
    D
    neither of a force nor a torque

  • The torque (tau) experienced by an electric dipole placed in a uniform electric field (E) at an angle theta with the field is

    A
    `pE cos theta`
    B
    `pE cos theta`
    C
    `pE sin theta`
    D
    `2pE sin theta`

  • An electric dipole of moment p is placed in a uniform electric field E. Then (i) the torque on the dipole is p xx E , (ii) the potential energy of the system is p.E, (iii) the resultant force on the dipole is zero

    A
    (i), (ii) and (iii) are correct
    B
    (i) and (iii) are correct and (ii) is wrong
    C
    Only (i) is correct
    D
    (i) and (ii) are correct and (ii) is wrong

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