Chapter 2

The nucleus of a copper atom contains how many protons?

The net charge of a neutral copper atom is

Assume the valence electron is removed from a copper atom. The net charge of the atom becomes

The valence electron of a copper atom experiences what kind of attraction toward the nucleus ?

How many valence electrons does a silicon atom have?

Which is the most widely used semiconductor?

How many protons does the nucleus of a silicon atom contain?

Silicon atoms combine into an orderly pattern called a

An intrinsic semiconductor has some holes in it at room temperature. What causes these holes?

When an electron is moved to a higher orbit level, its energy level with respect to the nucleus

The merging of a free electron and a hole is called

At room temperature, an intrinsic silicon crystal acts approximately like

The amount of time between the creation of a hole and its disappearance is called

The valence electron of a conductor can also be called a

A conductor has how many types of flow?

A semiconductor has how many types of flow?

When a voltage is applied to a semiconductor, holes will flow

For semiconductor material, its valence orbit is saturated when it contains

In an intrinsic semiconductor, the number of holes

Absolute zero temperature equals

At absolute zero temperature, an intrinsic semiconductor has

At room temperature, an intrinsic semiconductor has

The number of free electrons and holes in an intrinsic semiconductor decreases when the temperature

The flow of valence electrons to the right means that holes are flowing to the

Holes act like

Trivalent atoms have how many valence electrons?

An acceptor atom has how many valence electrons?

If you wanted to produce a p-type semiconductor, which of these would you use?

Electrons are the minority carriers in which type of semiconductor?

How many free electrons does a p-type semiconductor contain?

Silver is the best conductor. How many valence electrons do you think it has?

Suppose an intrinsic semiconductor has 1 billion free electrons at room temperature. If the temperature drops to 0°C, how many holes are there?

An external voltage source is applied to a p-type semiconductor. If the left end of the crystal is positive, which way do the majority carriers flow?

Which of the following doesn't fit in the group?

Which of the following is approximately equal to room temperature?

How many electrons are there in the valence orbit of a silicon atom within a crystal?

Negative ions are atoms that have

Which of the following describes an n-type semiconductor?

A p-type semiconductor contains holes an

Which of the following describes a p-type semiconductor?

When compared to a germanium diode, a silicon diode's reverse saturation current is

What causes the depletion layer?

What is the barrier potential of a silicon diode at room temperature?

When comparing the energy gap of germanium and silicon atoms, a silicon atom's energy gap is

In a silicon diode, the reverse current is usually

While maintaining a constant temperature, a silicon diode has its reverse-bias voltage increased. The diode's saturation current will

The voltage where avalanche occurs is called the

The width of a diode's depletion layer will decrease when the diode is

When the reverse voltage decreases from 10 to 5 V, the depletion layer

When a diode is forward biased, the recombination of free electrons and holes may produce

A reverse voltage of 10 V is across a diode. What is the voltage across the depletion layer?

The energy gap in a silicon atom is the distance between the valence band and the

The reverse saturation current doubles when the junction temperature increases

The surface-leakage current doubles when the reverse voltage increases