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Physics CBSE Live product
Class 10
Electricity
Annual Revision I - Electriicity
8.
TBQ - Nature of a material
Question:
3
m.
Why are the heating coils in electric toasters and irons made using alloys instead of pure metals?
An alloy is used as a coil in electrical appliances such as electric toasters and electric irons because it has
High resistivity
no resistivity
Low resistivity
high conductivity
High melting point
Low boiling point
High boiling point
Low melting point
Not easily oxidised
Easily oxidised
Never oxidise
None of these
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