Module 5 Electricity

define electrostatic force

the force of attraction or repulsion between charged objects/particles

Columbs Law states

theres a force in between all charged particles and its magnitude depends on the magnitude of the particles charge and their distance from eachother

this measures what

electrostatic force (Columbs Law)

unit of charge

Coulumb (C)

μC

microcoulumbs

charge force in unit of C

elecric feild

the surrounding area of a charged object that exerts force on surrounding objects

electrons all have an elementary (or fundamental) _____

charge

define elementary charge

the smallest non 0 charge that can be carried by a particle

elementary charge is ____ for the electrons and _____ for the protons

negative, positive

all substances have a charged that is some multiple of _______

elementary charge

electric force increases as charge ____

increases

electric force decreases as distance ______

increases

define electric field (E) in equation

the force that 1C of charge feels in a field

electrical feild works the same way as

gravitational feild

if an electrical feild were compared to earths gravitational feild, the charged object is

earth

any charged object has a

electric feild

electrostatic force

the strength of electrostatic force ______ as distance from the source increases

decreases

as distance from source decreases, strength of electrostatic force _____

increases

how to find electric feild (E)

electrostatic force (F) times amount of charge placed in feild (q)

define point charge

the charge of the source of an electric feild

what does the point charge equation measure

The magnitude of the electric field at a specific distance away from the point charge

newtons 3rd law

for every action there is an equal opposite reaction

capacitor

a device that stores electrical PE

current flows from

pos term to neg term, high voltage to low voltage

electron flows

negative to positive

conventional current

flow of pos chargecu

current

rate of charge flow, deltQ/deltR

unit for current

amp

ohlms law

V= current times resistanve

electric power

voltage times current (VI) or I² R or V²/ R

1 watt

1 joule/sec

voltage=

IR

electric currents are basically the flow of

electrons

what is power dissipation

the thermal energy released by an electric current when its voltage drops after passing a resistor

unit of power dissipation

watts

unit of capacitors

Farads μF (= 10⁻⁶ F)