Q57 / 270 · NDA 2010 (Phase 2) · General Ability

Two pieces of metallic wire having equal length and equal volume placed in air have different resistances. The two wires must:

A
have different cross sections
B
have different temperatures
Correct answer
C
be of different materials
D
be of same density

Solution

The correct answer is option (C).

Hence, the correct answer is option: 'C'.

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