Compare the resistances, Physics

Assignment Help:

Two resistances have lengths in the ratio 1:4 and radius 1:2,specific resistances in ratio 3:1. compare their resistances.

Solution)
Given lengths l1=1

                         l2=4

Given radius r1=1

                        r2=2

 Given  specific resistances Ρ(rho)1=3

               Ρ2= 1

we know the R=Ρl/A

              R1/R2=3/1.


Related Discussions:- Compare the resistances

What is the ohm law, What is the Ohm Law? Ohm discovered that the amoun...

What is the Ohm Law? Ohm discovered that the amount of current was directly proportional to the voltage (more voltage gives more current) and inversely proportional to the resi

Flashlight, Why are some flashlights brighter than others?

Why are some flashlights brighter than others?

Transformation of kinetic energy to potential energy, Q. Transformation of ...

Q. Transformation of kinetic energy to potential energy? A tiny ball at the end of string is swung in a circular vertical loop. The speed of rotation is reducing to the point t

What is the cheetah average acceleration, A cheetah can reach a top speed o...

A cheetah can reach a top speed of 27.8 m/s in 5.2 s. What is the cheetah's average acceleration?

Carrier concentration of metals, derive an expression for density of states...

derive an expression for density of states and hence deduce an expression for carrier concentration of metals

What is the magnitude of the northward acceleration, A man exerts a northwa...

A man exerts a northward force of 100 newtons on a 50 kilogram box which sits on a level floor. If the frictional force is 80 newtons. What is the magnitude of the northward

Refractive index, I''m looking for help with a particular project regarding...

I''m looking for help with a particular project regarding calculating specific refractive index calculations / measurements using a mirror. This help will involve practical assista

Magnetism, when a soft iron piece is buried under the surface of earth in t...

when a soft iron piece is buried under the surface of earth in the north south direction why the iron piece show properties of a magnet

Find the dipole moment of the combination, Three charges are arranged on th...

Three charges are arranged on the vertices of an equilateral triangle. Find the dipole moment of the combination ? Take any of two charges and search their dipole moment.(charg

Microwave Radiative Transfer in the Atmosphere, I''m transmitting microwave...

I''m transmitting microwave radiation from antenna to satellite..so when radiation(photons) is transmitted,how they interact with the molecules in the atmosphere layer by layer..I

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