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A dipole consists of $+q$ and $-q$ separated by distance $d$. Its dipole moment direction is:
AFrom $+q$ to $-q$, along the field of free charges
BPerpendicular to the line joining the two charges
CZero, since equal and opposite charges cancel always
DFrom $-q$ to $+q$, along the axis between them
Answer & Solution
Correct answer: D. From $-q$ to $+q$, along the axis between them
By convention, dipole moment points from negative to positive charge.
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