Two electric dipoles of moment P and 27 P are placed on a line with their centres 24 ~cm apart. Their dipole moments are in opposite direction. At which point the electric field will be zero between the dipoles from the centre of dipole of

Question

Two electric dipoles of moment P and 27 P are placed on a line with their centres 24 ~cm apart. Their dipole moments are in opposite direction. At which point the electric field will be zero between the dipoles from the centre of dipole of moment P?

Quantrex Academy · Accepted Answer

Correct answer: A. 6 ~cm

Dipole of moment p is at a distance x from N At N, E . F . due to dipole 1|=| E . F. due to dipole 2 aligned & 1 4 ₀ 2 p x ^3 = 1 4 ₀ 2(27 p ) (24- x )^3 & 1 x ^3 = 27 (24- x )^3 x =6 ~cm . aligned

Two electric dipoles of moment P and 27 P are placed on a line with their centres 24 ~cm apart. Their dipole moments are in opposite direction. At which point the electric field will be zero between the dipoles from the centre of dipole of moment P?

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