Which property is desirable for a material used as an electric heating element?
Options
A.
High electrical resistance
B.
Very low melting point
C.
Very low resistance
D.
More than one of the above
E.
None of the above
Correct Answer (Detailed Explanation is Below)
A.
High electrical resistance
Detailed Explanation
High electrical resistance is desirable for a heating element because more electrical energy can be converted into heat for a given current. The material should also have a high melting point and resistance to oxidation. Nichrome satisfies these requirements reasonably well and is therefore widely used in electrical heating appliances.