Find resistivity of wire, Physics

Q. A managing wire of length 2m has a diameter of 0.4 mm with a resistance of 70 ohm. Find its resistivity.

ρ = ( P X πr2) / L                   = ( 70 X 22 X 2 X 10-4 X 2 X 10-4) / 7 X 2

= 44 X 10-7                            = 4.4 X 10-6 Ωm = 4.4 μ Ωm

Posted Date: 7/16/2013 2:18:09 AM | Location : United States

Related Discussions:- Find resistivity of wire, Assignment Help, Ask Question on Find resistivity of wire, Get Answer, Expert's Help, Find resistivity of wire Discussions

Write discussion on Find resistivity of wire
Your posts are moderated
Related Questions
prove that equatorial line of dipole acts as equipotential surface

Describe the construction and working of carbon dioxide laser. Construction and Working: The most fundamental form of a CO 2 laser comprise a gas discharge (along with a mi

What are ultrasonic drilling and cutting? Explain in short. Ultrasonic Drilling and Cutting Ultrasonic are utilized for making holes into very hard materials as like glass a

In optics what is intended by the expression "constructive interference." Answer: This is factual for any kind of waves. Any time you have coherent waves of the same kind

Field Lines A field line is a locus in which is described through a vector field and a beginning location within the field. Field lines are meaningful for visualizing vector f

Que: Completely un-polarized light of intensity Io is occurrence on a polarizer whose polarization direction makes an angle of 15.0 degrees amid respect to the vertical. What i

A non uniform rod AB has a mass M and length 2L the mas per unit length of the rod is mx at a point of the rod distant x from A.find the moment of inertia of this rod about an axis

It is described by de-Broglie a moving material molecule sometimes acts as a wave and sometimes as a particle. The wave associated with moving particle is known as matter w

Neutron is a fundamental particle which is necessary constituent of all nuclei except that of hydrogen molecule. It was discovered by Chadwick. (1) The charge of neutron: It is

Match the name of every item given in the list below to the label pointing to that item in the diagram. Answer: I guess the only point I desire to stress here is that