Terms Flashcards
Atoms
The smallest amounts of a substance that can exist
Three main components of Atoms
Protons, Neutrons, and Electrons
Have a negative charge
Electrons
Have a positive charge
Protons
Have a neutral charge
Neutrons
What is the outermost electron that is usually give up so the atom can become stable called?
Valence Electron
- states that like-charges repel each other and opposite charges attract each other
Law of Charges
- have few electrons in the outer orbits
Conductors
- have several valence electrons that are difficult to free
Insulators
Flows in one direction, electrons with a negative charge travel to atoms with a positive charge
Direct Current (DC)
Rapidly reverse polarity,mainly for public use, is much more economical to transmit, and has many more uses
Alternating Current (AC)
The potential difference between two charges
Volt
Unit of measurement to quantify electron flow rate past a given point.
Ampere (AMP)
Unit used to measure resistance
Ohm
A type of resistance in an AC current that is produced when a conductor is wound into a coil and the lines of force overlap and reinforce each other.
Inductive Resistance
Electrical devices that primarily produce a magnetic field
Transformer
A transformer that has more windings in the primary coil than the secondary
Step Down Transformer
A transformer with less windings in the primary coil than the secondary coil
Step Up transformer
A device in an electrical circuit that stores electrical energy for later use
A capacitor
The amount of charge that can be stored
Capacitance
The total effect of pure resistance, inductive reactance, and capacitive reactance
Impedance
