Find resistivity of wire, Physics

Assignment Help:

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


Related Discussions:- Find resistivity of wire

What is a wave front?, A locus formed by joining the points which are at th...

A locus formed by joining the points which are at the equal distance from the source....is called wavefront...

Camshaft motion, A rod follower AB is subjected to a vertical up and down m...

A rod follower AB is subjected to a vertical up and down movement while resting on a circular contour of radius 30cm of a cam.the cam moves to the right with a velocity of 5 cm/s a

Explain the focal length of the convex lens, Convex lens can be used as a m...

Convex lens can be used as a magnifying glass. When an object that is 15.0 cm from the lens has an image that is exactly 55 times the size of the object, what is the focal leng

What are the characteristics of dead stars, What are the characteristics of...

What are the characteristics of dead stars? Dead stars are generally cold balls of material in empty space. A teaspoonful of white dwarf matter would weigh as more as an Ele

Define the term intrinsic stand-off ration in UJT, Define the term intrinsi...

Define the term intrinsic stand-off ration in UJT.   Ans:  Intrinsic Stand-off Ratio: Equivalent circuit of a UJT is demonstrated in fig. (a). Emitter diode forms the junctio

Resistivity, RESISTIVITY: R esistance may be defined as that property ...

RESISTIVITY: R esistance may be defined as that property of a substance which opposes (or restricts) the flow of current (or electrons) through it. The practical as well as MK

Define doppler''s effect of light, The process of apparent change in freque...

The process of apparent change in frequency (or wavelength) of the light because of relative motion among the source of light and the observer is known as Doppler's effect.

Determine the state of polarization, A light is evaluated by a rotating Nic...

A light is evaluated by a rotating Nicol showed no variation of intensity. Determine the state of polarization?

Working and construction of moving coil galvanometer, Get a mathematical ex...

Get a mathematical expression for the torque on a loop placed in a uniform magnetic filed. Define the working and construction of moving coil galvanometer?

Determine the hydraulic gradient and pressure, A piping system is shown bel...

A piping system is shown below. Flow is from A to D and minimum pressure to be maintained is 20 psi. Pipe Length (ft) Diameter (in) Flow r

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd