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NEETPhysicsCurrent Electricity

What fraction of the power consumed in the room, which has an air conditioner running for 5 hours a day at 220V, is dissipated as joule heating in the copper wiring of 1 mm radius and 10 m length?[ρ cu = 1.7 × 10 –8 Ωm]

Options

  1. A0.1%
  2. B0.2%
  3. C0.5%
  4. D1.0%

Correct answer

B. 0.2%

Step-by-step solution

Correct Option is : (B) 0.2%

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