Blood takes about 1.65 s to pass through a 2.00 mm long capillary. if the diameter of the capillary is 5.00 μm and the pressure drop is 2.85 kpa , calculate the viscosity of blood. assume laminar flow.

Viscosity of blood will be

Explanation:

We have given time to pass the capillary = 1.65 sec

Length of capillary L = 2 mm = 0.002 m

Pressure drop

Diameter

So radius

Velocity will be

We know that viscosity is given by

Viscosity of blood will be

r=rho l/a where a is the area, l is the length and rho is resistivity so the greater the area the lesser the resistance thats why the earth pin is thicker bcos current follow the shortest path, so less resistive .