Most common heating devices, such as toasters, irons, and electric ranges, are heated by current in a coil of ____ alloy wire or ribbon.

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Heating devices are commonly heated by current in a coil of nickel-chromium alloy wire or ribbon, commonly known as nichrome. Nichrome's high melting point and resistance to oxidation make it an ideal heating element material. Copper and silver are good conductors of electricity, but not ideal for heating elements. Chromium is also often used in heating elements, but usually alongside nickel.

Most Common Heating Devices, Such as Toasters, Irons, and Electric