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Far from a dipole, how does its electric field fall with distance r?
AAs 1/r
BAs 1/r^2
CAs 1/r^4
DAs 1/r^3
Answer & Solution
Correct answer: D. As 1/r^3
The fields of +q and -q partly cancel at large distance, leaving a net field that falls as 1/r^3.
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