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COMEDK2015PhysicsCurrent Electricity

I and V are respectively the current and voltage in a metal wire of resistance R . The I-V graph for the two different temperatures T₁ and T₂ given, then

Options

  1. AT_ I =T₂
  2. BT₁>T₂
  3. CT₁ < T₂
  4. DT₁=2 T₂

Correct answer

C. T₁ < T₂

Step-by-step solution

From the I-V graph, aligned & Slope of the line = 1 R & R= 1 slope aligned Since, slope of line having temperature T₁ is greater than slope of line having temperature T₂ . Hence, R₂>R₁ Since, on increasing temperature of a conductor, its resistance increases. Hence, T₂>T₁

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