| A | B |
|---|
| Anode | positive electrode |
| Cathode | negative electrode |
| Electrode | a metallic material that acquires a charge |
| Battery | a connection of electrical cells |
| Coulomb | quantity representing 6.28 x 10 18 electrons |
| Potential | electromotive force that causes the movement of free electrons in a conductor |
| Volt | the unit of measurement of EMF or potential |
| Current | movement of electrical energy in a circuit |
| Ampere | unit of measurement of current |
| DC | Current only flows in one direction |
| AC | Current that switches direction in its response to a change in voltage polarity |
| Static | electricity in which a material has an excess or deficiency of electrons |
| Mils | thousandths of an inch |
| Resistance | opposition to current |
| Ohm | unit of measure of resistance |
| Valence | electrons in the outer ring of an atom |
| Free | electron that has broken away from its original atom and is free to move from atom to atom within the atomic structure. |
| Insulator | material that has few free electrons |
| Conductor | material such as copper with easily allow current flow |
| Semiconductor | material having a conductance rate between a conductor and an insulator. |
| Atom | smallest part of an elementwhich contains all the unique characteristics of the element |
| Proton | an atomic particle that is positively charged |
| Electrons | atomic particles that are negatively charged |
