alleryWhy is nichrome used for the heating element of an electric iron rather than copper?
ABetter heat conductor
BHigh resistivity and m.p.
CLow resistivity overall
DLower density material
Answer & Solution
Correct answer: B. High resistivity and m.p.
Nichrome has high resistivity so it dissipates a lot of heat (I²R), and a high melting point so it survives glowing red-hot for long.
Copper has low resistivity — useless as a heating wire.
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