(a) Derive an expression for the electric field E due to a dipole of length 2a at a point distant r from the centre of the dipole on the axial line. (b) Draw a graph of E versus r for r ≫ a .
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(a) Write an expression for the electric field at a point $(0, y)$ on the dipole axis for $y>d / 2$ What is the direction of the field? (b) Show that when $y \gg d, E \approx 2 k q d l y^{3}$ [Hint: Use the binomial approximation from Appendix A.9.] (c) The field
Derive an expression for electric field due to electric dipole at a point on its axial line
Madhur L.
An electric dipole coincides on $z$ axis and its mid point is on origin of the cartesian co-ordinate system. The electric field at an axial point at a distance $z$ from origin is $E^{-}(z)$ and electric field at an equatorial point at a distance y from origin is $E^{\rightarrow}$ (y) $\left|E^{-}(z) / E^{-}(y)\right|(y=z \gg>a)=\ldots \ldots \ldots .$ (A) 1 (B) 2 (C) 4 (D) 3
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