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EA Physics Unit 8

Electrostatics

TermDefinition
dynamic Changing with time
static Having no motion or change
electrostatics The study of electric charges at rest.
subatomic particles Particles inside an atom (protons, neutrons, electrons)
electron The negatively charged subatomic particle. Gains or losses of this particle cause positive or negative charge.
neutron The neutral subatomic particle found in the nucleus.
proton The positively charged subatomic particle found in the nucleus.
elementary charge The magnitude of the charge of an electron (-e) or the charge on a proton (+e)
law of conservation of charge In a closed, isolated system, the total charge of the system remains constant.
coulomb The SI unit of electric charge
electrostatic force The force that one point charge exerts on another point charge
point charge An electric charge considered to exist at a single point, thus having no area or volume (infinitely small)
coulomb's law States that the size or magnitude of the electrostatic force that one point charge exerts on another point charge is directly proportional to the product of the charges and inversely proportional to the square of the distance between them.
k Electrostatic Constant (8.99E9)
electric field The region around a charged particle where a force is exerted on another charged particle.
test charge An imaginary point charge that does not alter an electric field, but can sense it.
electric field line The imaginary line along which a positive test charge would move in an electric field
electric field strength The force on a stationary positive test charge per unit charge in an electric field.
charging by induction When movable electrons migrate to one side of an object, resulting in two sides being oppositely charged. The net charge on the object remains zero.
charging by conduction When electrons move from one object to another through touching, resulting in a net excess or lack of electrons.
quantized Having values restricted to whole-number multiples of a specific base value.
Created by: ehansen_eak12
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