MHT CET 2023 Physics 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?
Answer: (A)
Solution
The point lies on the common axis of both dipoles, where the field magnitude is (direction along the dipole moment). Between the dipoles, with opposite moments, the two fields point in opposite directions, so they can cancel. Let the point be at distance from the dipole P; then its distance
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