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Electrostatics question

2013 · Q123
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Electrostatics question

2013 · Q123

NEETPhysicsElectrostaticsMCQ+4 / −1
An electric dipole of dipole moment p is aligned parallel to a uniform electric field E. The energy required to rotate the dipole by 90o is
  1. A
    p2 E
  2. B
    pE
  3. C
    infinity
  4. D
    pE2
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