4.2 Semiconductor

Which of the following is a material that allows current to easily flow through it?

• Semiconductor

• Conductor

• Insulator

• Plastic

Which of the following is a material that does NOT allow current to easily flow through it?

• Conductor

• Insulator

• Semiconductor

• Silicon

What is the term for the object that is in between a conductor and an insulator?

• Conductor

• Semiconductor

• Insulator

• Brass

Conductivity of semiconductor ....................... with increase in temperature.

• increases

• decreases

• remains unchanged

What is the most common semiconductor material used for producing integrated circuits

• Quartz

• Silicon

• Diamond

• Tantalum

Tags

NGSS.HS-PS2-6

Conductivity of semiconductor increases with increase in temperature, because .................

• number density of free charge carriers increases

• relaxation time increases

• both number density of free charge carriers and relaxation time increases

• number density of free charge carriers increases relaxation time decreases but effect of decrease in relaxation time is much less than increase in number density

Materials which can conduct electricity better than insulator,but not as well as conductors. This is the definition of

• diode

• semiconductor

• conductor

• insulator

• superconductor

Which of the following is a semiconductor?

• Silicon

• Copper

• Plastic

• Brass

Which is not one of the properties of semiconductor?

• 4 electrons in outermost orbit, in covalent bonding.

• atoms vibrate causes electron to break free from the bonds.

• Electron free leaves hole.

• Semiconductor has 2 types of charge carriers.

• all of the above are the properties of it

Tags

NGSS.HS-PS2-6

The process of adding an impurity to an intrinsic semiconductor is called

• Doping

• Ionization

• Recombination

• Atomic modification