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Show Variation of Resistivity of Si with Temperature in a Graph ? - Physics

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प्रश्न

Show variation of resistivity of Si with temperature in a graph ?

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उत्तर

The resistivity of Silicon with temperature is shown as

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Temperature Dependence of Resistance
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2013-2014 (March) Delhi Set 2

संबंधित प्रश्न

The order of coloured rings in a carbon resistor is red, yellow, blue and silver. The resistance of the
carbon resistor is:

a) 24 x 106 Ω ± 5%

b) 24 x 106 Ω ± 10%

c) 34 x 104 Ω ± 10%

d) 26 x 104 Ω ± 5%


Draw labelled graphs to show how electrical resistance varies with temperature for: 

1) a metallic wire.

2) a piece of carbon


The thermal energy developed in a current-carrying resistor is given by U = i2 Rt and also by U = Vit. Should we say that U is proportional to i2 or i?


A non-ideal battery is connected to a resistor. Is work done by the battery equal to the thermal energy developed in the resistor? Will your answer change if the battery is ideal?


As the temperature of a metallic resistor is increased, the product of its resistivity and conductivity ____________ .


The resistance of an iron wire and a copper wire at 20°C are 3.9 Ω and 4.1 Ω, respectively. At what temperature will the resistance be equal? Temperature coefficient of resistivity for iron is 5.0 × 10–3 K–1 and for copper, it  is 4.0 × 10–3 K–1. Neglect any thermal expansion.


In the absence of an electric field, the mean velocity of free electrons in a conductor at absolute temperature (T) is ______.

By increasing the temperature, the specific resistance of a conductor and a semiconductor -


Water at 10°C enters into a geyser. The water drawn out from the geyser has a temperature of 60°C and the rate of outflow of water is 18 kg/hr. The rating of the geyser is :


Temperature dependence of resistivity ρ(T) of semiconductors, insulators and metals is significantly based on the following factors:

  1. number of charge carriers can change with temperature T.
  2. time interval between two successive collisions can depend on T.
  3. length of material can be a function of T.
  4. mass of carriers is a function of T.

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