PN Junction Diode: Polytechnic Core

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PN diode basics in Hindi context

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Shiva

India

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Froggy Jumps PN Junction Diode: Polytechnic CoreOnline version PN diode basics in Hindi context by Shiva 1 What is a PN junction diode primarily made of? a Metal and insulator layers b Two P-type layers c P-type and N-type semiconductor regions 2 What happens when a PN junction is forward biased? a Depletion region narrows and current increases b No change in depletion region c Depletion region widens and current stops 3 What is the built-in potential of a PN junction? a Potential difference at equilibrium across the junction b External battery voltage c Zero potential 4 Which carriers primarily move in forward bias? a Electrons from N to P and holes from P to N b Only holes c Only electrons 5 What happens to current in reverse bias until breakdown? a Current becomes zero b Very small leakage current flows c High current flows 6 What is the depletion region? a Region free of free charge carriers at the junction b Material with only free carriers c Region with high conductivity 7 Which process dominates current in forward bias? a Diffusion of carriers across the junction b Drift in metal leads c Bulk conduction only 8 What is the I-V characteristic in forward bias? a No current until threshold b Linear with voltage c Exponential rise in current with voltage 9 What role do minority carriers play at the PN junction? a They block current entirely b They recombine, enabling current flow c They neutralize the junction 10 Which material is commonly used for constructing PN junctions in diodes? a Aluminum oxide b Copper c Silicon or germanium

Froggy Jumps

PN Junction Diode: Polytechnic CoreOnline version

PN diode basics in Hindi context

by Shiva

What is a PN junction diode primarily made of?

Metal and insulator layers

Two P-type layers

P-type and N-type semiconductor regions

What happens when a PN junction is forward biased?

Depletion region narrows and current increases

No change in depletion region

Depletion region widens and current stops

What is the built-in potential of a PN junction?

Potential difference at equilibrium across the junction

External battery voltage

Zero potential

Which carriers primarily move in forward bias?

Electrons from N to P and holes from P to N

Only holes

Only electrons

What happens to current in reverse bias until breakdown?

Current becomes zero

Very small leakage current flows

High current flows

What is the depletion region?

Region free of free charge carriers at the junction

Material with only free carriers

Region with high conductivity

Which process dominates current in forward bias?

Diffusion of carriers across the junction

Drift in metal leads

Bulk conduction only

What is the I-V characteristic in forward bias?

No current until threshold

Linear with voltage

Exponential rise in current with voltage

What role do minority carriers play at the PN junction?

They block current entirely

They recombine, enabling current flow

They neutralize the junction

Which material is commonly used for constructing PN junctions in diodes?

Aluminum oxide

Copper

Silicon or germanium

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PN Junction Diode: Polytechnic Core

Froggy Jumps

About this activity

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Download the paper version to play

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PN Junction Diode: Polytechnic CoreOnline version

by Shiva

What is a PN junction diode primarily made of?

What happens when a PN junction is forward biased?

What is the built-in potential of a PN junction?

Which carriers primarily move in forward bias?

What happens to current in reverse bias until breakdown?

What is the depletion region?

Which process dominates current in forward bias?

What is the I-V characteristic in forward bias?

What role do minority carriers play at the PN junction?

Which material is commonly used for constructing PN junctions in diodes?

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