List-I shows four configurations, each consisting of a pair of ideal electric dipoles. Each dipole has a dipole moment of magnitude p, oriented as marked by arrows in the figures. In all the configurations the dipoles are fixed such that they are at a distance 2 r apart along the x direction. The mi

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List-I shows four configurations, each consisting of a pair of ideal electric dipoles. Each dipole has a dipole moment of magnitude p, oriented as marked by arrows in the figures. In all the configurations the dipoles are fixed such that they are at a distance 2 r apart along the x direction. The midpoint of the line joining the two dipoles is X. The possible resultant electric fields E at X are given in List-II. Choose the option that describes the correct match between the entries in List-I to those in List-II. List-I List-II (P) (1) E =0 (Q) (2) E =- p 2 _0 r ^3 j (R) (3) E =- p 4 _0 r ^3 ( i - j ) (S) (4) E = p 4 _0 r ^3 (2 i - j ) (5) E = p _0 r ^3 i

Quantrex Academy · Accepted Answer

Correct answer: C. P 2, Q 1, R 4, ~S 5

E_ net = -2 k P r^3 j E_ n e t = -P j 2 _0 r^3 E _ net =0 2 P i 4 _0 r ^3 - P j 4 _0 r ^3 E _ net = 4 kP i r ^3 P 2, Q 1, R 4, ~S 5 Ans. (C)

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