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

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

Correspondence principle, Correspondence principle (N. Bohr) The princ...

Correspondence principle (N. Bohr) The principle that when a new, more general theory is placed forth, it has to decrease to the more specialized (and usually simpler) theory

what is the formula of temperature gradient?, The  temp gradient  is s...

The  temp gradient  is similar to finding the slope of a line (when in two dimensions) Temp. Gradient= Change in Temp. value/Distance. dT/dx = (T2 - T1)/(X2 - X1)

Determine state of calcium atom, Ca has atomic no. 20 and atomic weight 40....

Ca has atomic no. 20 and atomic weight 40. Which of the following statements is not correct about Ca atom: (1)The number of electrons is same as the number of neutrons   (2)

Explain photon, According to Eisenstein's quantum theory light propagates i...

According to Eisenstein's quantum theory light propagates in the bundles of power, every packet being called as photon and possessing energy.

Explain dielectric break down, Dielectric break down Dielectric Breakd...

Dielectric break down Dielectric Breakdown : Dielectric Breakdown of a dielectric material is because of the excitation of electrons into the conduction band across the energy

Calculate the commutator-semiempirical formula, 1. A given radioactive samp...

1. A given radioactive sample emits only one type of radiation. When placed in a counter for 10 minutes, 1632 counts are registered. Then the sample is removed and a background

Double degenerate, Illustrated below are 5 of  the normal modes of ethylene...

Illustrated below are 5 of  the normal modes of ethylene (HCCH). At its equilibrium geometry this molecule has no dipole moment, but for some of the normal modes the distortion dur

What is active network, Active network:- It can be described as a net...

Active network:- It can be described as a network, which contains one or more than single source of e.m.f. in 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