Special resistor materials: platinum, Physics

Assignment Help:

Platinum:

Atomic number

78

Symbol

pt

Atomic weight

195.09

Discovery

Olloa 1735

Electronic configuration

5d9

Melting point

17750C

Electrical resistivity

10.9*10-8 ohm-m.

Properties:

1.      It is a white greyish metal.

2.      It has a good tensile strength.

3.      It is one of the most stable metals under combined action of corrosion and electrical erosion.

4.      It does not corrode under most adverse atmospheric condition.

5.      It can be easily drawn into wires.

Uses: Platinum finds application as a heating element in laboratory ovens and furnaces. Platinum-rhodium thermocouple is used for measurement of temperatures up to 16000C. It is also used as electrical contact material and as material for grids in special purpose vacuum tubes.


Related Discussions:- Special resistor materials: platinum

Speed of light, what will happen if we will walk with the speed of light or...

what will happen if we will walk with the speed of light or faster than it?

How much does automotive oil weigh, How much does automotive oil weigh? ...

How much does automotive oil weigh? As rough guide engine oil generally weighs about 0.87 kg/litre or about 7.2 pounds per US gallon unfortunately a rough answer is the best th

Explain the nuclear notation?, Explain the Nuclear Notation? Chemical r...

Explain the Nuclear Notation? Chemical reactions deal with the number of electrons exchanged or shared.  Nuclear reactions, on the other hand, involve protons and neutrons and

Fizeau method, Fizeau method (A. Fizeau, 1851): One of the first reall...

Fizeau method (A. Fizeau, 1851): One of the first really relativistic experiments intended to calculate the speed of light. Light is flow through a spinning cogwheel driven th

Claculate deviation, A ray of light is incident normally on an equilateral ...

A ray of light is incident normally on an equilateral prism of refractive index 3/2 calculate devition. Ans) since the prism is equilateral therefore angle of prism is 60 0 =

Explain bi-prism experiment, Explain why a narrow slit is used in case of B...

Explain why a narrow slit is used in case of Bi-prism experiment where as an extended source is used in Newton's rings experiment?

Calculate the velocity of the ball, A boy is standing on an elevator which ...

A boy is standing on an elevator which is traveling downward with a constant velocity of 30 meters per second.  The boy throws a ball vertically upward with a velocity of 10 meters

Capacitance, Capacitance: If we increase the voltage between the plates...

Capacitance: If we increase the voltage between the plates, the charge increases, but the ratio of charge to voltage remains the same.  This ratio gives the capacitance (C)  of

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