Physics · Current Electricity
Alloys are preferred over pure metals in electrical heating devices because:
- 1the resistivity of an alloy is lower than that of its constituent metals
- 2the elasticity of an alloy is higher than that of its constituent metals
- 3the resistivity of an alloy is generally higher than its constituent metals✓
- 4alloys oxidise (burn) readily at high temperatures
Correct answer
the resistivity of an alloy is generally higher than its constituent metals
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