Quiz #1, #2 - ECE6200 Electronics 1 Electronic Devices

What is the smallest particle that retains the characteristics of an element?

• Proton

• Neutron

• Atom

• Electron

Which of the following orbits farthest from the nucleus in an atom?

• Protons

• Neutrons

• Valence electrons

• Core electrons

What happens when a valence electron gains sufficient ionization energy?

• It becomes a free electron

• It stays in the valence shell

• It merges with protons

• It stops conducting

Which material is a good conductor of electricity?

• Silicon

• Rubber

• Copper

• Glass

Which type of semiconductor has holes as the majority carriers?

• N-type

• P-type

• Insulator

• Conductor

What is the energy gap between the valence band and the conduction band called?

• Ionization energy

• Bandgap

• Energy level

• Voltage drop

In an N-type semiconductor, which particles are the majority carriers?

• Electrons

• Holes

• Protons

• Neutrons

What is the main element used in semiconductors like diodes and transistors?

• Copper

• Silicon

• Iron

• Zinc

What happens in the depletion region of a PN junction?

• Electrons and holes recombine

• Protons are released

• Electrons move freely

• Current flows without resistance

What is the typical barrier potential for silicon at room temperature?

• 0.2V

• 0.5V

• 0.7V

• 1.1V