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Two point charges +q and –q are held fixed at (–d, o) and (d, o) respectively of a x-y coordinate system. Then 
  • a)
    The electric field E at all points on the x-axis has the same direction
  • b)
    Electric field at all points on y-axis is along x-axis
  • c)
    Work has to be done in bringing a test charge from ∞ to the origin
  • d)
    The dipole moment is 2qd along the x-axis
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
Two point charges +q and –q are held fixed at (–d, o) and ...
The two charges form an electric dipole. If  we take a point M on the X-axis as shown in the figure, then the net electric field is in –X-direction.
∴ Option (a) is incorrect.
If we take a point N on Yaxis, we find net electric field along  + X direction.
The same will be true for any point on Y-axis. (b) is a correct option.
NOTE : For any point on the equatorial line of a dipole, the electric field is opposite to the direction of dipole moment.
(b) W∞ – 0 = q (V–V0) = q (0 – 0) = 0
∴ (c) is incorrect. The direction of dipole moment is from –ve to + ve. Therefore (d) is incorrect.
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Two point charges +q and –q are held fixed at (–d, o) and (d, o) respectively of a x-y coordinate system. Thena)The electric field E at all points on the x-axis has the same directionb)Electric field at all points on y-axis is along x-axisc)Work has to be done in bringing a test charge from ∞ to the origind)The dipole moment is 2qd along the x-axisCorrect answer is option 'B'. Can you explain this answer?
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Two point charges +q and –q are held fixed at (–d, o) and (d, o) respectively of a x-y coordinate system. Thena)The electric field E at all points on the x-axis has the same directionb)Electric field at all points on y-axis is along x-axisc)Work has to be done in bringing a test charge from ∞ to the origind)The dipole moment is 2qd along the x-axisCorrect answer is option 'B'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about Two point charges +q and –q are held fixed at (–d, o) and (d, o) respectively of a x-y coordinate system. Thena)The electric field E at all points on the x-axis has the same directionb)Electric field at all points on y-axis is along x-axisc)Work has to be done in bringing a test charge from ∞ to the origind)The dipole moment is 2qd along the x-axisCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Two point charges +q and –q are held fixed at (–d, o) and (d, o) respectively of a x-y coordinate system. Thena)The electric field E at all points on the x-axis has the same directionb)Electric field at all points on y-axis is along x-axisc)Work has to be done in bringing a test charge from ∞ to the origind)The dipole moment is 2qd along the x-axisCorrect answer is option 'B'. Can you explain this answer?.
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