Review Questions

Electrons orbit around a nucleus of what materials?
Why are some atoms referred to "Negative Ions" and where to do they collect?
Where do the "free" electrons come from and how are they freed?
Describe the flow of electrons using the "Theory of Electron Flow"
An increase in the number of negative ions collecting at the negative battery post will have what effect on the "potential of electrons" to flow?
Name three things a complete circuit will contain?
Describe how current flow will be affected by voltage and/or resistance.
What affect will increasing current flow have on the magnetic field around a conductor?
Name the three forms of motion used to induce voltage in a conductor.
What will happen to current, if a diode is installed in a forward bias?
What happens to the resistance of an NTC type variable resistor if the temperature is decreased?
What type of motor can be used to hold something still?
What is Doping of semiconductors?
Why can't electrons move about freely in an insulator?