A rod of radius B is charged to a linear charge density λ. The volume charge density inside the rod (b ≤ B) is described by ρ (b) = bρ₀ / B, where ρ₀ is some unknown constant and ρ(b) has units C/m³. The charge on a volume element dV is dq = ρ dV. To get the total charge (Q = λY), we integrate dq = ρ dV over the entire length (Y) of the rod from zero to the radial length B. Determine the value of ρ₀ in terms of λ and B. Hint: Find the volume of an element dV of length Y, radius b, and thickness db.