Consider the following statements A and B and identify the correct answer :
A : Thermistors can have only negative temperature coefficients of resistances.
B : Thermistors with negative temperature coefficients of resistance are used as resistance thermometers, to measure low temperatures of the order of 10 K.

Both A and B are true

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Both A and B are false

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A is true, but B is false

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A is false, but B is true

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Solution

The correct option is B A is false, but B is true
We know that thermistors can have both negative and positive temperature coefficients of resistances, but negative temperature will be used to measure low temperature in resistance thermometer and positive will be for higher.

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Similar questions

Q. Consider the following statements A and B and identify the correct answer
A : Thermistors can have only -ve temperature coefficient of resistors.
B : Thermistors with -ve temperature coefficients of resistance are used as resistance thermometers to measure low temperature of the order of 10K

Q. Assertion :A pure semiconductor has negative temperature coefficient of resistance. Reason: In a semiconductor on raising the temperature, more charge carriers are released, conductance increases and resistance decreases.

Q. Two conductors have the same resistance at

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but their temperature coefficients of resistance are

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a_{2}

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Q. A paramagnetic material is placed in a magnetic field. Consider the following statements:
(A) If the magnetic field is increased, the magnetisation is increased.
(B) If the temperature is increased, the magnetisation is increased.
(a) A and B are true.
(b) A is true but B is false.
(c) B is true but A is false.
(d) A and B are false.

In the following question a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the correct option out of the choices given below in each question.

Assertion (A) At critical temperature liquid passes into gaseous state imperceptibly and continuously.

Reason (R) The density of liquid and gaseous phase is equal to crictical temperature.

(a) Both A and R are true and R is the correct explanation of A

(b) Both A and R are true but R is not the correct explanation of A

(d) A is false but R is true

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The correct option is B A is false, but B is trueWe know that thermistors can have both negative and positive temperature coefficients of resistances, but negative temperature will be used to measure low temperature in resistance thermometer and positive will be for higher.

The correct option is B A is false, but B is true
We know that thermistors can have both negative and positive temperature coefficients of resistances, but negative temperature will be used to measure low temperature in resistance thermometer and positive will be for higher.