Physics - Electricity Flashcards
What is a series circuit?
all the components connected in one loop
sharing voltage
the same current flowing through each component continuously
what is a parallel circuit?
the components connected on separate branches
voltage is the same across each branch
current is shared
how to solve resistance in a series circuit?
sum of individual resistance of each component
formula for voltage
V = IR
how to find the potential difference of the battery in a series circuit?
V total = v1 + v2 + v3 ….
how to find current in a parallel circuit?
I total = I1 + I2 + I3
how to find the potential difference in a parallel circuit?
V total = v1 = v2 = v3
what do ammeters do
measure current in amps
what do voltmeters do
measure potential difference in volts
what does a diode do?
allows current to flow in one direction
what does a variable resistor do?
modify the amount of resistance
what does a thermistor do?
changes its resistance depending on the temperature.
what does a LDR do?
changes its resistance depending on the light level.
what does a fuse do?
breaks the circuit if the current is too high.
