answersLogoWhite

0

Because Copper is an excellent conductor of electricity it would take too much copper wire to make an element having sufficient resistance to fit into the small space provided in any normally-sized electric heater. For that reason heating elements must be made from metals which have a much higher electrical resistance than Copper. Special alloys of metals such as Iron, Cobalt, Nickel, Zinc and Manganese have been invented for this purpose.

User Avatar

Wiki User

16y ago

What else can I help you with?

Related Questions

What has more resistance a nichrome wire or a copper wire?

A nichrome wire has more resistance than a copper wire. This is because nichrome is made of a nickel-chromium alloy that has higher resistivity compared to copper, which allows it to impede the flow of electricity more effectively.


Does copper conduct electricity better than nichrome?

yes it does -------------------- You might say they are polar-opposites. Copper is specifically used where low resistance is desired. NiChrome is often used as a resistance wire. For example, model rocket engines utilize nichrome wire to ignite the fuel because the resistant wire will glow red-hot when electric power is applied.


Why is nichrome used for heating element in a toaster?

A nichrome wire has high resistance and gets heated faster, saving electricity.


Why copper use at home rather than nichrome?

It might be newer than copper or less tested because this metal has been mixed with other metals such as iron


What happens to copper oxide when its heated?

if it is heated above 1200 degrees celsius than it melts


Why aluminum has high thermal expansion coefficient than Copper?

Aluminum has a higher thermal expansion coefficient than copper because its crystal structure allows for larger atomic movements when heated. This results in a greater expansion of aluminum compared to copper when exposed to heat. Additionally, aluminum has a lower density and stronger interatomic bonds, leading to a higher degree of expansion when heated.


Hydrogen over heated aluminium Nothing observed H over heated copper oxide Red glow spreads and leaves red powder that conducts electricity Why is H more or less active than Al or Cu?

The Pauling electronegativity of hydrogen is higher than the electronegativities of aluminium or copper.And copper is more reactive than aluminium.The red poweder obtained is copper as a metal.


When a bimetallic bar made of copper and iron is heated bar bends toward iron?

This is because copper expands more than iron when heated, causing the side with copper to elongate and bend towards the iron side. This phenomenon is known as thermal expansion and is utilized in devices like thermostats to control temperature.


When hydrogen gas passed over heated cupric oxide?

When hydrogen gas passed over heated cupric oxide, the hydrogen is oxidized and displaces copper from the copper oxide as metallic copper, because hydrogen is higher than copper in the electromotive series. Water vapor is also produced by the reaction.


When cu and agno3 is heated what colour it gives and why?

It gives green color . Copper is more reactive than silver therefore it displaces silver from silver nitrate and forms silver + copper nitrate


Why does copper sulfate change mass when heated?

Solid copper appears to gain mass when heated in air, because the copper reacts with oxygen in the air to form copper oxide. However, the actual mass of the copper does not increase; the mass of the solid increases by a value equal to the mass of oxygen removed from the air.


Why ore of copper is not concentrated by hydraulic washing?

Copper ore, usually in the form of malachite, needs to be refined through a chemical reaction, rather than a mechanical separation as with washing. It needs to be ground and heated to separate out the copper metal from the compound.