The solids which have the negative temperature coefficient of resistance are : (1) semiconductors only (2) insulators and semiconductors (3) metals (4) insulators only

Home » The solids which have the negative temperature coefficient of resistance are : (1) semiconductors only (2) insulators and semiconductors (3) metals (4) insulators only

The solids which have the negative temperature coefficient of resistance are :
(1) semiconductors only
(2) insulators and semiconductors
(3) metals
(4) insulators only

Physics

The solids which have the negative temperature coefficient of resistance are :
(1) semiconductors only
(2) insulators and semiconductors
(3) metals
(4) insulators only

Correct option: (2)

Insulators have a negative temperature coefficient because their resistance decreases as the temperature rises. As the temperature rises, the semiconductor material’s resistivity decreases, resulting in a negative temperature coefficient which is a form of resistance.

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More Material

Two cells of voltage 10V and 2V and internal resistances 10Ω and 5Ω respectively are connected in parallel with the positive end of the 10V battery connected to the negative pole of 2V battery. Find the effective voltage and effective resistance of the combination.

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