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

The mass of a mol of proton and electron, The mass of a mol of proton and e...

The mass of a mol of proton and electron is: (1) 6.023x 10 23 g (2) 1.008g and 0.55mg (3) 9.1x 10 -28 kg         (4) 2gm Ans: (2) 1.008g  and 0.55mg

Determine the magnitude and direction of emf, A single turn coil of radius ...

A single turn coil of radius 5cm is placed on a plane paper and magnetic flux, directed perpendicularly out of the paper changes according to φ = 11t 2 + 7t + 15. Determine the ma

Electronics, list the factors used to classify inductors.

list the factors used to classify inductors.

Express the new single black hole, 1. How fast must an object travel for i...

1. How fast must an object travel for its total energy to be (a) 1% more than its rest energy and (b) 99% more than its rest energy. 2. A proton is moving with a constant speed

What are the electric generators, What are the Electric Generators? An ...

What are the Electric Generators? An electric generator is a situation in which a loop of conducting wire rotates in an area with a magnetic field. During the first half of t

Magnetic force does the wire experience, Consider a 10 cm long portion of a...

Consider a 10 cm long portion of a straight wire having a current of 10 A placed in a magnetic field of 0.1 T making an angle of 530  with the wire. What magnetic force does the wi

Voltages relative to earth, Voltages relative to earth It is very commo...

Voltages relative to earth It is very common in electrical circuits to have an earth connection. This earth connection has no effect on potential differences across components

Determine grating element in specturm, A beam of light of wavelength λ = ...

A beam of light of wavelength λ = 5000Å falling normally on a plane diffraction grating. The 1 st order spectrum is derived in a direction making an angle θ 1 with the norma

Magnetic lines of flux, Magnetic lines of flux   A line of flux is ...

Magnetic lines of flux   A line of flux is a line indicating the direction in which a free north pole would travel, if placed in the field at that point. Alternatively it

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