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What special characteristics must a heating wire have?

Answer :

Final answer:

Heating wire requires special characteristics like high thermal and electrical conduction properties, appropriate gauge for higher current-carrying capacity and adequately color-coded insulation to prevent unsafe heating effects.

Explanation:

The special characteristics of a heating wire include its thermal and electrical conduction properties. Good electrical conductors such as metals like copper, aluminum, silver, and gold are often good heat conductors too.

This is because large numbers of free electrons can carry electrical current and transport thermal energy. Thus, when electric power is supplied to these wires, it can be converted to heat energy.

Apart from the material of the wire, its gauge or diameter also contributes to its heating characteristics. The larger the diameter, the greater the current-carrying capacity, eventually increasing the heat produced.

The insulating plastic is usually color-coded to prevent undesired heating effects such as short circuits which can cause rapid increase in temperature and potential risk of fires.

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