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An electric dipole of moment p is placed in an electric field of intensity E . The dipole acquires a position
such that the axis of the dipole makes an angle θ with the direction of the field. Assuming that the potential energy of the dipole to be zero when θ = 90°, the torque and the potential energy of the dipole will respectively be
  • a)
    pE sinθ, 2pE cosθ
  • b)
    pE cosθ, –pE sinθ
  • c)
    pE sinθ, –pE cosθ
  • d)
    pE sinθ, –2pE cosθ
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
An electric dipole of moment p is placed in an electric field of inten...
Electric Dipole in an Electric Field
- The torque experienced by an electric dipole in an electric field is given by the formula: Torque = pE sinθ where p is the dipole moment, E is the electric field intensity, and θ is the angle between the dipole moment and the electric field.
- The potential energy of the dipole in an electric field can be calculated using the formula: Potential energy = -pE cosθ.
- When the dipole is aligned perpendicular to the electric field (θ = 90°), the potential energy is zero.

Calculation of Torque and Potential Energy
- Given that the dipole is at an angle θ with the electric field, the torque on the dipole is given by pE sinθ.
- The potential energy of the dipole at this angle is -pE cosθ.
- Comparing the given options, the correct combination of torque and potential energy is pE sinθ, -pE cosθ (Option C).
- Therefore, the torque experienced by the dipole is pE sinθ, and the potential energy of the dipole is -pE cosθ when it is at an angle θ with the electric field.
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Community Answer
An electric dipole of moment p is placed in an electric field of inten...
C option
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An electric dipole of moment p is placed in an electric field of intensity E . The dipole acquires a positionsuch that the axis of the dipole makes an angle θ with the direction of the field. Assuming that thepotential energy of the dipole to be zero when θ = 90°, the torque and the potential energy of the dipolewill respectively bea)pE sinθ, 2pE cosθb)pE cosθ, –pE sinθc)pE sinθ, –pE cosθd)pE sinθ, –2pE cosθCorrect answer is option 'C'. Can you explain this answer?
Question Description
An electric dipole of moment p is placed in an electric field of intensity E . The dipole acquires a positionsuch that the axis of the dipole makes an angle θ with the direction of the field. Assuming that thepotential energy of the dipole to be zero when θ = 90°, the torque and the potential energy of the dipolewill respectively bea)pE sinθ, 2pE cosθb)pE cosθ, –pE sinθc)pE sinθ, –pE cosθd)pE sinθ, –2pE cosθCorrect answer is option 'C'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about An electric dipole of moment p is placed in an electric field of intensity E . The dipole acquires a positionsuch that the axis of the dipole makes an angle θ with the direction of the field. Assuming that thepotential energy of the dipole to be zero when θ = 90°, the torque and the potential energy of the dipolewill respectively bea)pE sinθ, 2pE cosθb)pE cosθ, –pE sinθc)pE sinθ, –pE cosθd)pE sinθ, –2pE cosθCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for An electric dipole of moment p is placed in an electric field of intensity E . The dipole acquires a positionsuch that the axis of the dipole makes an angle θ with the direction of the field. Assuming that thepotential energy of the dipole to be zero when θ = 90°, the torque and the potential energy of the dipolewill respectively bea)pE sinθ, 2pE cosθb)pE cosθ, –pE sinθc)pE sinθ, –pE cosθd)pE sinθ, –2pE cosθCorrect answer is option 'C'. Can you explain this answer?.
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