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The temperature dependence of resistance of Cu and undoped Si in the temperature range 300 - 400 K is best described by

Options

  1. Alinear increase for Cu , exponential decrease for Si
  2. Blinear decrease for Cu , linear decrease for Si
  3. Clinear increase for Cu , linear increase for Si
  4. Dlinear increase for Cu , exponential increase for Si

Correct answer

A. linear increase for Cu , exponential decrease for Si

Step-by-step solution

Resistance variation with temperature: resistance of a metal increases with increase in temperature linearly and resistance of a semiconductor decreases exponentially with increase in temperature.

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