Find the ratio of radii of the two wires, Physics

Assignment Help:

Q. Two wires of same material and same length have resistances 5 and 10 respectively. Find the ratio of radii of the two wires.

R = ρl / A = ρl / πr2

 R1 = ρl / A = ρl / π r12 ; R 2 = ρl / A = ρl / π r22

R2 / R1 = r12 / r22    ∴  r1 / r2 = √ R 2 / √ R 1 = √10 :    √5 = √2 : 1

 


Related Discussions:- Find the ratio of radii of the two wires

Explain the nuclear chain reactions, Explain the Nuclear Chain Reactions ...

Explain the Nuclear Chain Reactions Fission is the breaking up of a massive nucleus into two fragments, with the release of energy and some particles. Uranium 235 fissions upon

Landauers principle, Landauer's principle: A principle that states it ...

Landauer's principle: A principle that states it doesn't take energy to compute data explicitly, but rather it takes energy to erase any data, as erasure is a significant step

Properties of electromagnetic spectrum, Properties of  Electromagnetic spe...

Properties of  Electromagnetic spectrum: A spectrum can be divided into 3 regions. They are UV region, Visible region and IR region. Monochromatic light is a light which consi

Peltier effect and joules law of heating, Q. Give any two differences among...

Q. Give any two differences among Peltier effect and Joule's law of heating. Joule's law of heating Peltier effect Takes place all th

Electric, What makes a flashlight suddenly become dim or bright when you sh...

What makes a flashlight suddenly become dim or bright when you shake it?

Joule''s law, applications of joule''s law?

applications of joule''s law?

Give an example of the elapse time for different observers, Two observers, ...

Two observers, A on earth and B in a spacecraft whose speed is 2.00 x 108 m/s, both set their watches to the same time when the ship is abreast of the earth. (a) How much tim

Explain real ball bearings, Real ball bearings Study real ball bearings...

Real ball bearings Study real ball bearings and roller bearings. Make a list of devices that having ball bearings or roller bearings.

Determine the depth of a freshwater lake - sound waves, Sound waves are bei...

Sound waves are being used to determine the depth of a freshwater lake, as shown in the figure below. If the water is 25°C and it takes 1.2 s for the echo to return to the sens

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