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

Electrostatics, in a uniform electric field, the potential is 10v at the or...

in a uniform electric field, the potential is 10v at the origin and 8v at each of the points (1,0,0),(0,1,0) and (0,0,1).Find the potential at the point (1,1,1).

Isothermal compression and adiabatic expansion of ideal gas, Define Isother...

Define Isothermal Compression and Adiabatic Expansion of Ideal Gas ? An ideal gas is dense at constant temperature from volume v 1 to volume v 2. a) Calculate the work

Determine the current in the coil and its phase angle, A coil of inductance...

A coil of inductance 159.2mH and resistance 40 is connected in parallel with a 30µF capacitor across a 240V, 50Hz supply. Calculate (a) the current in the coil and its phase ang

Voltage division, Voltage division: In a series circuit Ohm's law appli...

Voltage division: In a series circuit Ohm's law applies for each component.  However, since the current is common to all components we have:           V1 = IR1,  V2 = IR2,

LASERS, What are different pumping mechanisms in LASERS?

What are different pumping mechanisms in LASERS?

Charles law, Charles' law (J.A.C. Charles; c. 1787) At constant pressur...

Charles' law (J.A.C. Charles; c. 1787) At constant pressure the volume of ideal gas is proportional to the thermodynamic temperature of that gas.

Total polarization, In the presence of electronic, ionic and dipolar polari...

In the presence of electronic, ionic and dipolar polarization mechanisms, t he average induced  dipole moment per molecule will be the sum of all the contributions in terms of the

Doppler effect, Doppler effect (C.J. Doppler) Waves emitted through a ...

Doppler effect (C.J. Doppler) Waves emitted through a moving object as attained by an observer will be blueshifted (compressed) if approaching, redshifted (elongated) if reced

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