In a semiconductor, the resistivity-a)depends on temperatureb)depends...
In a semiconductor, the resistivity depends on temperature.
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In a semiconductor, the resistivity-a)depends on temperatureb)depends...
Introduction: Semiconductors are materials that have electrical conductivity between that of a conductor and an insulator. The resistivity of a semiconductor is an important parameter that determines its electrical behavior.
Dependence on temperature: The resistivity of a semiconductor depends on temperature. As the temperature of a semiconductor increases, its resistivity decreases. This is because the increased thermal energy causes more electrons to be excited to higher energy levels, making them available for conduction. At higher temperatures, the number of charge carriers increases, resulting in lower resistivity.
Dependence on voltage: The resistivity of a semiconductor does not depend on voltage. However, the current through a semiconductor depends on the voltage applied across it, according to Ohm's law. The relationship between voltage, current, and resistance is given by the equation V=IR, where V is the voltage, I is the current, and R is the resistance.
Dependence on current: The resistivity of a semiconductor does not depend on the current through it. However, the current through a semiconductor depends on its resistivity, according to Ohm's law. The relationship between current, voltage, and resistance is given by the equation I=V/R, where I is the current, V is the voltage, and R is the resistance.
Conclusion: In summary, the resistivity of a semiconductor depends on temperature but not on voltage or current. This is an important characteristic of semiconductors that is used in many applications, including electronics and solar cells.