What happens to the coefficient of electrical resistance when we increase the temperature ?

Options :
  1. increases for a doped semiconductor
  2. decreases for a thermistor
  3. may increase or decrease for a pure semiconductor
  4. decreases for a tungsten wire
Answer and Explanation :-

Answer: Option 2

Explanation:

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Mockingbirds don't do one thing but make music for us to enjoy. They don't eat up people's gardens, don't nest in corncribs, they don't do one thing but sing their hearts out for us. That's why it's a sin to kill a mockingbird.
-Harper Lee To Kill a Mockingbird