Question

The resistivity of a certain material is 0.6 Ωm. The material is most likely to be
(a) an insulator
(b) a superconductor
(c) a conductor
(d) a semiconductor

Answer 1

Answer:

The resistivity of semiconductor like silicon and germanium is in between those of conductor and insulator.

Answer 2

The resistivity of a certain material is 0.6 Ωm. The material is most likely to be a semiconductor.

Explanation:

The resistivity of the material is 0.6 Ωm. The semiconductors mostly have a higher resistivity. It usually has a resistivity in the range from 10-4 to 103-ohm m. Since the semiconductors have a property of negative temperature coefficient, the temperature co-efficient value of resistivity, α is negative. Also, when the conductivity of the semiconductors increases, the resistivity of the conductor decreases. When the temperature of the semiconductor increases, then the density of the charge carriers increases due to which the resistivity decreases.

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