The temperature dependence of resistances of Cu and undoped Si in the temperature range $300 - 400 K$ , is best described by

Linear increase for Cu, linear increase for Si.

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Linear increase for Cu, exponential increase for Si.

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Linear increase for Cu, exponential decrease for Si.

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Linear decrease for Cu, linear decrease for Si.

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Solution

The correct option is C Linear increase for Cu, exponential decrease for Si.
Resistance of a conductor increases linearly with temperature.
$R = R_{o} (1 + α Δ T)$

Resistance of semiconductor decreases with temperature.
Conductivity, $σ = {C e}^{- E_{G} / 2 k T}$

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The temperature dependence of resistances of Cu and undoped Si in the temperature range 300−400 K, is best described by

The correct option is C Linear increase for Cu, exponential decrease for Si.Resistance of a conductor increases linearly with temperature. R=Ro(1+αΔT) Resistance of semiconductor decreases with temperature. Conductivity, σ=Ce−EG/2kT

The temperature dependence of resistances of Cu and undoped Si in the temperature range $300 - 400 K$ , is best described by

The correct option is C Linear increase for Cu, exponential decrease for Si.
Resistance of a conductor increases linearly with temperature.
$R = R_{o} (1 + α Δ T)$

Resistance of semiconductor decreases with temperature.
Conductivity, $σ = {C e}^{- E_{G} / 2 k T}$