hi,
ohms law:- resistance as the ratio of the Voltage to the current.
R=V/I
if resistors are connected in series, the current in all resistors are the same.
if resistors are connected in parallel, the potential difference across them are the same.
three resistors that have values of 5,2,1 ohms, are connected in series and parallel to a battery, which resistor gets most power in both series and parallel?