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NDA2010General AbilityGeneral ScienceActual

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

Options

  1. Ahave different cross sections
  2. Bhave different temperatures
  3. Cbe of different materials
  4. Dbe of same density

Correct answer

C. be of different materials

Step-by-step solution

The correct answer is option (C).

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