A Newtonian liquid (ρ = density, μ = viscosity) is flowing with velocity „v‟ in a tube of diameter ‘D’. Let Δp be the pressure drop across the length ‘L’. For a laminar flow, Δp is proportional to_________________?

Question

Accepted Answer

LμV/D2. For laminar flow of a Newtonian liquid in a pipe (Poiseuille's Law), the pressure drop ($\Delta p$) is proportional to $\frac{L\mu v}{D^2}$. Option B matches this relationship.