Question: Find the electric dipole moment of: (a) A ring with charge per unit length = 0 cos where is the angular

Find the electric dipole moment of:
(a) A ring with charge per unit length λ = λ₀ cos ϕ where ϕ is the angular variable in cylindrical coordinates.
(b) A sphere with charge per unit areas σ = σ₀ cos θ where θ is the polar angle measured from the positive z-axis.

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