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Questions and Answers
What creates the space charge (depletion) region of width W?
What creates the space charge (depletion) region of width W?
- Diffusion of holes from p-side to n-side.
- Electric field E established from the fixed +ve ions (N + d ) and -ve ions (N − a). (correct)
- Migration of electrons from n-side to p-side.
- Equilibrium potential difference V0 across W.
What happens when p-type and n-type are put together?
What happens when p-type and n-type are put together?
- Holes and electrons remain stationary.
- Holes diffuse from n-side to p-side and electrons from p-side to n-side.
- Holes and electrons diffuse in the same direction from p-side to n-side.
- Holes diffuse from p-side to n-side and electrons from n-side to p-side. (correct)
What does the electric field E induce across the depletion region?
What does the electric field E induce across the depletion region?
- Increase in carrier migration rate.
- Neutralization of ionized acceptors and donors.
- Expansion of the depletion region.
- Drift current to oppose diffusion current. (correct)
What creates the space charge (depletion) region of width W when p-type and n-type are put together?
What creates the space charge (depletion) region of width W when p-type and n-type are put together?
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What type of current does the electric field E induce to oppose the diffusion current across the depletion region?
What type of current does the electric field E induce to oppose the diffusion current across the depletion region?
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What establishes an equilibrium potential difference V0 across the width W of the depletion region?
What establishes an equilibrium potential difference V0 across the width W of the depletion region?
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