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Questions and Answers
What is the primary cause of current flow in a semiconductor?
What is the primary cause of current flow in a semiconductor?
- Neutron flow
- Proton flow
- Electron and hole flow (correct)
- Photon flow
In a semiconductor, what is the effect of applying a voltage across it?
In a semiconductor, what is the effect of applying a voltage across it?
- Free electrons move towards the positive side (correct)
- Neutrons move towards the positive side
- Holes move towards the positive side
- Protons move towards the positive side
What is drift velocity in a semiconductor?
What is drift velocity in a semiconductor?
- Speed of electrons in a vacuum
- Velocity of electrons in gaseous state
- Finite steady velocity of electrons under steady state conditions (correct)
- Velocity of electrons due to gravity
What does mobility refer to in a semiconductor?
What does mobility refer to in a semiconductor?
How is drift velocity computed in a semiconductor?
How is drift velocity computed in a semiconductor?
What is the primary difference between an n-type and a p-type semiconductor?
What is the primary difference between an n-type and a p-type semiconductor?
What is the concentration of free electrons in the material?
What is the concentration of free electrons in the material?
What is the concentration of holes in the material?
What is the concentration of holes in the material?
Based on the carrier concentrations, does the material behave as p or n type?
Based on the carrier concentrations, does the material behave as p or n type?
What is responsible for diffusion current in semiconductors?
What is responsible for diffusion current in semiconductors?
Under what conditions can diffusion current exist in a semiconductor?
Under what conditions can diffusion current exist in a semiconductor?
Which factors are diffusion constants for holes and electrons directly proportional to?
Which factors are diffusion constants for holes and electrons directly proportional to?
What is the equation for drift current density in a semiconductor?
What is the equation for drift current density in a semiconductor?
What is the formula for conductivity of intrinsic semiconductor?
What is the formula for conductivity of intrinsic semiconductor?
What does the number of donor impurity atoms per unit volume represent in n-type semiconductor conductivity equation?
What does the number of donor impurity atoms per unit volume represent in n-type semiconductor conductivity equation?
Which parameter greatly influences the conductivity of p-type semiconductor?
Which parameter greatly influences the conductivity of p-type semiconductor?
How is the conductivity of semiconductor computed in terms of electron and hole mobility?
How is the conductivity of semiconductor computed in terms of electron and hole mobility?
What property significantly differs between Ge and Si based on the atomic structure table?
What property significantly differs between Ge and Si based on the atomic structure table?
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