Read the following statements carefully: (Y): The resistivi…

Physics Current Electricity Resistance MCQ (Single Correct)

Read the following statements carefully:

(Y): The resistivity of semiconductor decreases with increase of temperature.

(Z): In a conducting solid, the rate of collisions between free electrons and ions increases with increase of temperature.

Select the correct statement (s) from the following:

Y is true but Z is false

Y is false but Z is true

Both Y and Z are true

Y is true and Z is the correct reason for Y

Text Solution

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The correct answer is:

In semiconductor resistance decrease with increase in the temperature. Therefore resistivity also decrease. In conducting solid resistance increase with increase the temperature because the rate of collisions between free electron and ions increases with increase of temperature both the statements are true.

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