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A point Q lies on the perpendicular bisector of an electrical dipole of dipole moment p. If the distance of Q from the dipole is r (much larger than the size of the dipole), then the electric field at Q is proportional to [1998]
- a)p–1 and r–2
- b)p and r–2
- c)p2 and r–3
- d)p and r–3
Correct answer is option 'D'. Can you explain this answer?
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A point Q lies on the perpendicular bisector of an electrical dipole o...
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A point Q lies on the perpendicular bisector of an electrical dipole o...
We can use the formula for the electric field due to an electric dipole at a point on its perpendicular bisector:
$$E = \frac{1}{4\pi\epsilon_0}\frac{2p}{r^3}$$
where $p$ is the dipole moment, $r$ is the distance of the point from the dipole, and $\epsilon_0$ is the permittivity of free space.
Since $r$ is much larger than the size of the dipole, we can assume that $r$ is essentially constant. Therefore, the electric field at point $Q$ is proportional to $p$:
$$E \propto p$$
Therefore, the answer is (a).
$$E = \frac{1}{4\pi\epsilon_0}\frac{2p}{r^3}$$
where $p$ is the dipole moment, $r$ is the distance of the point from the dipole, and $\epsilon_0$ is the permittivity of free space.
Since $r$ is much larger than the size of the dipole, we can assume that $r$ is essentially constant. Therefore, the electric field at point $Q$ is proportional to $p$:
$$E \propto p$$
Therefore, the answer is (a).
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A point Q lies on the perpendicular bisector of an electrical dipole of dipole moment p. If the distance of Q from the dipole is r (much larger than the size of the dipole), then the electric field at Q is proportional to [1998]a)p–1 and r–2b)p and r–2c)p2 and r–3d)p and r–3Correct answer is option 'D'. Can you explain this answer? for Class 12 2026 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about A point Q lies on the perpendicular bisector of an electrical dipole of dipole moment p. If the distance of Q from the dipole is r (much larger than the size of the dipole), then the electric field at Q is proportional to [1998]a)p–1 and r–2b)p and r–2c)p2 and r–3d)p and r–3Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 12 2026 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A point Q lies on the perpendicular bisector of an electrical dipole of dipole moment p. If the distance of Q from the dipole is r (much larger than the size of the dipole), then the electric field at Q is proportional to [1998]a)p–1 and r–2b)p and r–2c)p2 and r–3d)p and r–3Correct answer is option 'D'. Can you explain this answer?.
A point Q lies on the perpendicular bisector of an electrical dipole of dipole moment p. If the distance of Q from the dipole is r (much larger than the size of the dipole), then the electric field at Q is proportional to [1998]a)p–1 and r–2b)p and r–2c)p2 and r–3d)p and r–3Correct answer is option 'D'. Can you explain this answer? for Class 12 2026 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about A point Q lies on the perpendicular bisector of an electrical dipole of dipole moment p. If the distance of Q from the dipole is r (much larger than the size of the dipole), then the electric field at Q is proportional to [1998]a)p–1 and r–2b)p and r–2c)p2 and r–3d)p and r–3Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 12 2026 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A point Q lies on the perpendicular bisector of an electrical dipole of dipole moment p. If the distance of Q from the dipole is r (much larger than the size of the dipole), then the electric field at Q is proportional to [1998]a)p–1 and r–2b)p and r–2c)p2 and r–3d)p and r–3Correct answer is option 'D'. Can you explain this answer?.
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