ENG TIBITS Y10 T3

voltage

the difference between electrical potential energy per unit charge (to make a current of 1 ampere to flow through a 1 ohm resistor) between 2 points

current

the rate of electron flow ove time (proportional to it’s voltage over current)

energy

the ability to do work or bring charge

power

the rate at which work is done over time

resistance

a material’s opposition to the flow of electrons measured in ohms (proportional to voltage over current)

analogue signals

recorded data with an infinite range of values

digital signals

data recorded in a binary system where values are true or false 1 or 0

KVL

the sum of all voltage drops must equal to the sum of all voltage rises in a loop

KCL

the sum of all current entering a node must equal the sum of all currents leaving

AC

the current alternates directions at regular intervals

DC

the current flows in one direction

current and resistance in series

current doesn’t change over resistor

voltage and resistor

voltage drops

in parallel when resistance increases

resistor increases, volt increases, brighter lightbulb

rules for series

+ = +

rules for parallel

= + +

NAND

if 0 then 1

NOR

if 1 then 0