At a certain temperature, the number density of charge carriers in a semiconductor is n . When an electric field is applied to it, the charge carriers drift with an average speed v . If the temperature of the semiconductor is raised.

Question

At a certain temperature, the number density of charge carriers in a semiconductor is n . When an electric field is applied to it, the charge carriers drift with an average speed v . If the temperature of the semiconductor is raised., n will increase but v will decrease, n will decrease but v will increase, Both n and v will increase, Both n and v will decrease

MARKS App · Accepted Answer

On raising the temperature of the semiconductor, covalent bonds start breaking up and thus more charge carriers release. This will increase the value of n and as a result the rate of collision of charge carriers will increase. This will decrease the drift speed v .

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