Parallel
The equivalent resistance is
R_{equivalent} = Ω
and the total current is I = A.
For the parallel circuit the entire battery voltage is applied to each resistor. The current branches, and the currents are calculated from Ohm's law:

Series
The equivalent resistance is
R_{equivalent} = Ω
and the total current is I = A.
For the series circuit the entire current flows through each resistor. The voltages is divided, and the voltage drops across each resistor are calculated from Ohm's law:
