Let the cross-sectional radius of the pipe be r.We know that the area of a circle of radius r is given by $\pi {{r}^{2}}$ Since the cross-section of the pipe is circular, we have $A=\pi {{r}^{2}}$, where A is the area of the cross-section...
Viscosity is the ratio of the shear stress to the velocity of the gradient. It can be computed with the following formula: Viscosity = ( force * distance between two layers of fluid ) / ( cross-sectional area * velocity of fluid) = ( F * d)/( A * v ) ...
Shear stress and shear strain occur when a force is acting parallel to the cross sectional area of a material. This force is known as a shearing... Learn more about this topic: Shear Strain Definition, Formula & Examples from Chapter 2/ Lesson 10 ...
Resistivity is measured by determining the resistance of a material sample of known dimensions, then calculating based on its length and cross-sectional area. 5 How do manufacturers utilize the concept of conductivity? Manufacturers use materials with high conductivity for electrical components to ensure...
Where ρ is resistivity, L is length, A is cross-sectional area. For a given material, increasing length or decreasing area raises resistance. Resistance is not constant with shape. Temperature Metals have a positive temperature coefficient – their resistance increases with temperature. This relation...
Current per unit cross-sectional area is known ascurrent density. It is expressed in amperes persquare meter, amperes per square centimeter, or amperes per square millimeter. Current density can also be expressed in amperes per circular mil. In general, the greater the current in a conductor, ...
It is represented mathematically as: μ = B/H B in this case is magnetic flux density established within the material. It depends on the concentration of magnetic field lines (flux) per unit cross-sectional area. H is themagnetic field strengthof the magnetizing field. The field is produced...
where l is termed as the self-inductance of the coil or the coefficient of self-inductance, the self-inductance depends on the cross-sectional area, the permeability of the material, and the number of turns in the coil. the rate of change of magnetic flux in the coil is given as, \(...
What is the electric flux through (a) surface 1 (b) surface 2 ? Explain why fluid velocity is greatest where streamlines are closest together. (Hint: Consider the relationship between fluid velocity and the cross-sectional area through which it flows.) ...
What is Ballistic Galvanometer? The resistance of a metal rod depends on temperature. True or false? Relating to physics, describe an insulator. Describe how the following factors are directly or indirectly proportional to the resistance of a material. a. Length. b. Cross-sectional area. ...