Six point charges form an ideal hexagon in the z = 0 plane as shown below. The absolute values of the charges are the same, but the signs of any two adjacent charges are opposite.
(a) What is the first non-zero electric multipole moment of this charge distribution? You need not compute its value.

(b) The electrostatic potential far from this distribution varies as ϕ(r) ∝ r^−N. What is N?

Transcribed Image Text:

b a q Y b 오 X