Question
Download Solution PDFElectrostatic field at a distance r from midpoint of a dipole is proportional to?
This question was previously asked in
SSC Scientific Assistant Physics Official Paper (Held On: 24 November 2017 Shift 1)
- 1/r2
- 1/r
- 1/r3
- r
Answer (Detailed Solution Below)
Option 3 : 1/r3
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SSC Scientific Assistant Physics Official Paper (Held On: 22 November 2017 Shift 1)
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200 Questions
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Detailed Solution
Download Solution PDFCONCEPT:
- Dipole: The measure of the polarity of the system is the electric dipole moment.
- The simplest example of an electric dipole is a pair of electric charges of equal magnitude and opposite signs separated by distance.
At any point at r distance from the dipole, Electric field
\(E = \frac{Kp}{r^3}\sqrt{3cos^2θ+1}\)
where p is the dipole moment, r is the distance from the dipole, θ is angle, and K is the constant.
EXPLANATION:
At any point at r distance from the dipole, Electric field
\(E = \frac{Kp}{r^3}\sqrt{3cos^2θ+1}\)
E α 1/r3
So the correct answer is option 3.
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