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    What are P and N type semiconductors?

    P type has holes as majority carriers; N type has electrons.

    What is the energy band gap?

    It separates the conduction band from the valence band.

    How do conductors differ from insulators?

    Conductors have overlapping bands; insulators have a large energy gap.

    What happens to a semiconductor at low temperatures?

    It behaves like an insulator due to filled valence and empty conduction bands.

    What is drift velocity?

    The average velocity of charge carriers under an electric field.

    What defines an intrinsic semiconductor?

    It is pure and has equal numbers of electrons and holes.

    What is the role of doping in semiconductors?

    It increases the number of charge carriers, enhancing conductivity.

    What is a P-N junction?

    It is formed by joining P type and N type semiconductors.

    What occurs during forward biasing of a diode?

    The potential barrier is reduced, allowing current to flow.

    What is reverse biasing in a diode?

    It increases the potential barrier, preventing current flow.

    What is breakdown voltage?

    The minimum reverse voltage causing a sudden increase in current.

    What is the significance of the knee voltage?

    It is the forward voltage where current increases rapidly.

    What is the difference between majority and minority carriers?

    Majority carriers dominate current flow; minority carriers are less abundant.

    What is the mobility of charge carriers?

    It measures how quickly carriers move under an electric field.

    What is the function of a Zener diode?

    It allows current to flow in reverse when a specific voltage is reached.

    What is the current density in a semiconductor?

    It is the current per unit area flowing through the material.

    What happens to conductivity as temperature increases in semiconductors?

    Conductivity increases due to more electrons crossing to the conduction band.

    What is the depletion layer in a P-N junction?

    It is a region void of charge carriers, acting as a barrier.

    What is the difference between static and dynamic resistance in diodes?

    Static resistance is for DC; dynamic resistance is for AC changes.

    What are P and N type semiconductors?

    P type has holes as majority carriers; N type has electrons.

    What is the energy band gap?

    It separates the conduction band from the valence band.

    What happens to conductivity as temperature increases in semiconductors?

    Conductivity increases due to more electrons crossing to the conduction band.

    What defines a semiconductor?

    Conductivity lies between conductors and insulators.

    How do conductors differ from insulators in terms of energy bands?

    Conductors have overlapping bands; insulators have a large energy gap.

    What is drift velocity?

    The average velocity of charge carriers under an electric field.

    What is the role of impurities in semiconductors?

    They increase the number of charge carriers.

    What is a p-n junction?

    The interface between p-type and n-type semiconductors.

    What occurs during forward biasing of a p-n junction?

    The potential barrier is reduced, allowing current flow.

    What is the depletion layer?

    A region with no free charge carriers formed at the p-n junction.

    What is the significance of Fermi energy in semiconductors?

    It indicates the energy level where the probability of occupancy is 50%.

    What is the difference between intrinsic and extrinsic semiconductors?

    Intrinsic are pure; extrinsic have impurities added.

    What happens in reverse biasing of a p-n junction?

    The potential barrier increases, preventing current flow.

    What is the knee voltage?

    The forward voltage where current starts increasing rapidly.

    What is avalanche breakdown?

    A sudden increase in reverse current due to high reverse bias.

    What defines n-type semiconductors?

    They have excess electrons from pentavalent impurities.

    What defines p-type semiconductors?

    They have excess holes from trivalent impurities.

    What is the relationship between drift velocity and electric current?

    Current is proportional to drift velocity and charge carrier density.

    What is the current density?

    Current per unit cross-sectional area.

    What is the forbidden energy gap in insulators?

    It is very large, preventing electron movement.

    What is the effect of temperature on the mobility of charge carriers?

    Mobility decreases with increasing temperature due to scattering.

    What are P and N type semiconductors?

    P type has holes as majority carriers; N type has electrons.

    What is the energy band gap?

    It separates the conduction band from the valence band.

    What happens to conductivity as temperature increases in semiconductors?

    Conductivity increases due to more electrons crossing to the conduction band.

    What defines a semiconductor?

    It has a small energy gap and can conduct under certain conditions.

    How do conductors differ from insulators?

    Conductors have overlapping bands; insulators have a large energy gap.

    What is drift velocity?

    It is the average velocity of charge carriers under an electric field.

    What is the role of impurities in semiconductors?

    They increase the number of charge carriers, altering conductivity.

    What is a P-N junction?

    It is formed by joining P type and N type semiconductors.

    What occurs during forward biasing of a diode?

    The potential barrier is reduced, allowing current to flow.

    What is reverse biasing in a diode?

    It increases the potential barrier, preventing current flow.

    What is the significance of the depletion layer?

    It acts as a barrier to further charge carrier movement.

    What is the breakdown voltage?

    It is the minimum reverse voltage causing a sudden increase in current.

    What is the knee voltage?

    It is the forward voltage where current starts increasing rapidly.

    What defines an intrinsic semiconductor?

    It is pure and has equal numbers of electrons and holes.

    What is the difference between n-type and p-type semiconductors?

    N-type has excess electrons; P-type has excess holes.

    What is Fermi energy?

    It is the maximum energy of free electrons at absolute zero.

    What is the mobility of charge carriers?

    It is the drift velocity per unit electric field strength.

    What happens in avalanche breakdown?

    High reverse bias causes a large increase in reverse current.

    What is the current density?

    It is the current per unit cross-sectional area.

    What is the relationship between current and drift velocity?

    Current is proportional to the number of charge carriers and their drift velocity.

    What is the role of holes in semiconductors?

    Holes act as positive charge carriers in the conduction process.