APFIVE Electric Field Minimum Along Dipole Axis
An electric dipole consists of charges $$+q$$ and $$-q$$ separated by distance $$d$$. At what point along the dipole axis (measured from the center of the dipole) is the magnitude of the electric field at a minimum (excluding infinity and the exact center)?
A
r = ±d
B
There is no minimum; the field decreases monotonically with distance.
C
r = ±d/2
D
r = ±d/√2
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