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3.02 Electric Current
vocab pertaining to electric current
12
Physics
9th Grade
07/10/2019

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Term
electron
Definition
Negatively charged subatomic particle
Term
subatomic
Definition
Prefix “sub” from Latin meaning “under”, “below” or “beneath”

Lower than the atomic level – protons, neutrons, electrons
Term
electricity
Definition
The flow of electrons from one atom to another
Term
conductor
Definition
Material with low resistance – electrons/electricity flows easily
Term
insulator
Definition
Material with high resistance – slows the flow of electricity
Term
resistance
Definition
Measure of how well a material conducts electricity
Term
amperage (current)
Definition
Rate of flow of electrons
Term
voltage
Definition
Force behind the electron flow
Term
power (electrical)
Definition
Rate at which electrical energy is transferred

Calculated by multiplying current and voltage
Term
direct current
Definition
Electrical current that flows in only one direction

Example: batteries
Term
alternating current
Definition
Current which switches directions periodically

Example: electricity being sent to homes
Term
electron affinity
Definition
Atom’s tendency to attract electrons
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