Why can't tungsten be replaced with commonly available and affordable metals like copper or aluminium? Suggest what can be done to have these metals substituting tungsten.
Answers
Answer:
Explanation:
These metals have a low melting points and when they produce light at that temperature they turn into liquid making things worse off. So we use Tungsten
Tungsten can't be replaced with commonly available and affordable metals like copper or aluminium, because -
• The tungsten is known for it's extremely high melting point and significantly higher amount of resistivity. (That's why,the tungsten was used in the older electrical bulbs.)
• The other metals like copper and aluminium which are comparatively more common and affordable, have much more lower melting point and low resistivity,than the tungsten.
• In the fields,where we need a metal of high melting point and high resistivity,we can surely use tungsten. Having the opposite characteristics,the copper and aluminium can't be replaced in this case.
We can mix other metals with the copper and aluminium,to make suitable alloy which can show our necessary characteristics of high melting point and high resistivity