Microbiology Poiseuille’s Hagen law is A F = (PA-PB) X 3.14 X r^4/8nl B F = (PA+PB) X 3.14 X r^4/8nl C F = (PA/PB) X 3.14 X r^4/8nl D F = (PA X PB) X 3.14 X r^4/8nl 💡 Explanation Poiseuille's Hagen law is ✓ Correct Answer: A. F = (PA-PB) X 3.14 X r^4/8nl