1. explain why nichrome wire used in the heater. 2. explain why copper wire not used in the heater.​

1

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. ... Hence, nichrome has high resistivity and low conductivity.

2

Its melting point is lower than tungsten and at high temperature the copper will melt. 2. Resistivity of tungsten is higher than copper. If we use a thick tungsten wire in the electric bulb , then the resistance will get reduced and to achieve the requisite heat, more energy will be spent

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explanation:

b.

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