electricity Flashcards
potential difference in series circuits
shared amongst components
current in series circuits
same throughout
resistance in series circuits
total resistance is the sum of the individual resistance of each component
potential difference in parallel circuits
all components get full voltage
current in parallel circuits
currents add up to equal total
resistance in parallel circuits
reciprocal of total resistance equal to sum of resistance reciprocal of each component
define current
the rate of flow of charge
define one coulomb
the amount of charge that passes in 1 second when the current is 1A
how do LDRs work
light provides the energy that releases electrons from their atoms. lower resistance
thermistors, LDRs, diodes, are all types of what
semi conductors
what is a potential divider
a method of splitting potential difference by connecting 2 resistors in series. total potential difference is split in the ratio of their resistances
resisitivity
proportional to area
inversely proportional to length.
