Why is nichrome used for heating elements in a heater Class 7?
Nichrome wire is used as a heating element because it is very stable, even at high temperatures. Unlike other metals, it will not melt even when generating large amounts of heat. … When electrons encounter resistance while trying to flow through a substance, energy is lost through heat.
Why nichrome is used as heating element give two reasons?
Nichrome is used to make the heating elements of electrical appliances because it has a high resistance and a high melting point.
Why is Nichrome wire generally used as heating element in heating appliances give any three reasons?
In most of the household heating appliances, nichrome element is used because of the following reasons: (i) Its melting point is high. (ii) Its resistivity is large. (iii) It can be easily drawn into thin wires (i.e., it’s ductile).
Why is nichrome wire used as a heating element in heater?
Note: A nichrome wire is used as a heating element because of its high melting point and high resistivity (low conductivity) also. Having a high melting does not allow the nichrome wire to melt easily when a large amount of heat is produced.
Why is nichrome used for making heating elements of heaters and toasters?
Nichrome, a non-magnetic 80/20 alloy of nickel and chromium, is the most common resistance wire for heating purposes because it has a high resistivity and resistance to oxidation at high temperatures. When used as a heating element, it is usually wound into coils.
What is Nichrome and its uses?
Nichrome (also known as NiCr, nickel-chromium or chromium-nickel) is a family of alloys of nickel, chromium, and often iron (and possibly other elements) commonly used as resistance wire, heating elements in things like toasters and space heaters, in some dental restorations (fillings) and in a few other applications.
What is Nichrome use?
Nichrome is an alloy of nickel , chromium , manganese and iron having a resistivity of about 60 times more than that of copper. It is used for making the heating elements of electrical heating appliances like electric iron.
What is Nichrome state its use?
Due to all these properties Nichrome is used for making heating elements. These heating elements are electric heater, electric rod, electric iron etc. Therefore, Nichrome is used to make heating elements like electric heaters, electric rod, electric iron etc.
Why nichrome is used in electric iron?
nichrome has high electrical resistance ,so it gets heated up fast . It is also less reactive .
Why is nickel used as heating element?
AN ALLOY OF NICKEL AND CHROMIUM IS USED AS A HEATING ELEMENT BECAUSE IT INCREASES THE ELECTRICAL RESISTANCE AT HIGH TEMPERATURES AS WELL AS IT MAKES THE ALLOY CORROSION RESISTANT IN WATER. MAY THIS HELP YOU.