In Poiseuilli's method of determination of coefficient of viscosity, the physical quantity that requires greater accuracy in measurement is

In Poiseuille's method of determination of viscosity , what is the physical quantity that requires greater accuracy in measurement ? Formula eta = (pi P r^4)/(8 VI)

In Poiseuille's method of determination of viscosity , what is the physical quantity that requires greater accuracy in measurement ? Formula eta = (pi P r^4)/(8 VI)

Accuracy of measurement is determined by

Name the physical quantity which is measured in weber (ampere)^-1

Any four physical quantities that can be measured

For which physical quantity kilowatt-hour is used as a unit for measurement?