Due to the difference in concentration of charge carrier in two sections of P-N junction, the electrons from N-junction diffuse through the junction into P-region and the hole from the P region diffuse into N-region. The net result is that the diffused electrons and holes are gone. In a N-side region near to the junction interface, free electrons in the conduction band are gone due to (1) the diffusion of electrons to the P-side and (2) recombination of electrons to holes that are diffused from the P-side. Holes in a P-side region near to the interface are also gone by a similar reason. As a result, majority charge carriers are depleted in the region around the junction interface, so this region is called the depletion region. Depletion layer acts like a barrier that opposes the flow of electrons from n-side and holes from p-side.

explain how the depletion region is formed?

explain how diodes connected in the circuits?

differentiate between forward bias and reverse bias?

positive battery terminal connected to p-type

electrons and holes move toward each other

the depletion region disappeared.

the depletion region becomes larger

a single sample of silicon is treated first with a p-dopant and then with an n-dopant

p-type and n-type are connected together

The diagram shows the arrangement of silicon atoms and valence electrons in an intrinsic semiconductor. Which of the following statements is true about P?

They are holes created when valence electrons free themselves from the bond.

They are holes created when doped with a trivalent atom.

They are free electrons created when doped with a pentavalent atom

They are positive ions created when electrons escape from the atoms.1

The diagram shows the structure of a semiconductor diode.

X: p-type semiconductor; Y: n-type semiconductor

X: n-type semiconductor; Y: n-type semiconductor

X: p-type semiconductor; Y: p-type semiconductor

X: n-type semiconductor; Y: p-type semiconductor

Diodes and Transistors

Quiz

•

Physics

•

12th Grade

•

Practice Problem

•

Easy

•

NGSS

HS-PS2-5, HS-PS3-5, HS-PS1-3

+2

Standards-aligned

Charles Martinez

Used 1+ times

FREE Resource

20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Where are depletion layers formed?

In silicon chips

On the ends of diodes

Where the current is strongest

At boundaries between p and n-type regions of a diode

At boundaries between p and p-type regions of a diode

2.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

A diode whose holes and free electrons are drawn
away from each other is ____.

forward-biased

reverse-biased

given a net positive charge

given a net negative charge

converted to a transistor

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The diagram shows a series circuit with a battery, a
resistor, and an LED. If the current is 10 mA, what is
the resistance?

490

506

600

680

760

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A reverse-bias diode acts as a very high-value _____.

battery

resistor

switch

transistor

semiconductor

5.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

a circuit connecting a diode, a 550 Ω resistor, and a power supply that forward biased the diode. If the diode with a voltage drop of
0.7 V has a current of 0.015 A, what is the voltage of
the power supply?

7

8

9

10

12

What is the current in the circuit?

A. 5/40 A

B. 5/50 A

C. 5/10 A

D. 5/20 A

E. 10/15 A

When a P-type semiconductor is suitably joined to an N-type semiconductor, then resulting arrangement is
called___________.

P-N junction

resistance

transistor

inductor

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Diodes and Transistors

20 questions

Where are depletion layers formed?

A diode whose holes and free electrons are drawn
away from each other is ____.

The diagram shows a series circuit with a battery, a
resistor, and an LED. If the current is 10 mA, what is
the resistance?

A reverse-bias diode acts as a very high-value _____.

a circuit connecting a diode, a 550 Ω resistor, and a power supply that forward biased the diode. If the diode with a voltage drop of
0.7 V has a current of 0.015 A, what is the voltage of
the power supply?

What is the current in the circuit?

When a P-type semiconductor is suitably joined to an N-type semiconductor, then resulting arrangement is
called___________.

The potential difference created across the P-N junction due to the diffusion of electrons and holes is called___________

the figure A shows

The figure B shows:

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Popular Resources on Wayground

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Diodes and Transistors

20 questions

Where are depletion layers formed?

A diode whose holes and free electrons are drawnaway from each other is ____.

The diagram shows a series circuit with a battery, aresistor, and an LED. If the current is 10 mA, what isthe resistance?

A reverse-bias diode acts as a very high-value _____.

a circuit connecting a diode, a 550 Ω resistor, and a power supply that forward biased the diode. If the diode with a voltage drop of0.7 V has a current of 0.015 A, what is the voltage ofthe power supply?

What is the current in the circuit?

When a P-type semiconductor is suitably joined to an N-type semiconductor, then resulting arrangement iscalled___________.

The potential difference created across the P-N junction due to the diffusion of electrons and holes is called___________

the figure A shows

The figure B shows:

Create a free account and access millions of resources

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Physics

A diode whose holes and free electrons are drawn
away from each other is ____.

The diagram shows a series circuit with a battery, a
resistor, and an LED. If the current is 10 mA, what is
the resistance?

a circuit connecting a diode, a 550 Ω resistor, and a power supply that forward biased the diode. If the diode with a voltage drop of
0.7 V has a current of 0.015 A, what is the voltage of
the power supply?

When a P-type semiconductor is suitably joined to an N-type semiconductor, then resulting arrangement is
called___________.