The loss of head due to friction according to Darcy’s formula is _____________________?
A. 4fLv2/gd
B. 4fLv2/2gd
C. 4fLv/gd
D. 4fLv/2gd
A. 4fLv2/gd
B. 4fLv2/2gd
C. 4fLv/gd
D. 4fLv/2gd