Electric Field Minimum Along Dipole Axis

Question

An electric dipole consists of charges $$+q$$ and $$-q$$ separated by a distance $$d$$. For a point at a distance $$r$$ from the center of the dipole along its axis, at what value of $$r$$ is the magnitude of the electric field a minimum, excluding $$r=0$$ and $$r 	o \infty$$?

Accepted Answer

There is no minimum; the field decreases monotonically with distance.

Answer

r = ±d/√2

Answer

r = ±d/2

Answer

r = ±d

Electric Field Minimum Along Dipole Axis

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