Assertion (A): The temperature coefficient of resistance is positive for metals and…

Physics · Class 12 · CBSECurrent Electricity

Assertion (A): The temperature coefficient of resistance is positive for metals and negative for semi-conductors.
Reason (R): The charge carriers in metals are negatively charged whereas in semiconductors they are positively charged.

  1. Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
  2. Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
  3. Assertion (A) is true, but Reason (R) is false.
  4. Assertion (A) is false and Reason (R) is also false.

Answer

(C) Assertion (A) is true, but Reason (R) is false.

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