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The Series CircuitA series circuit is, in which the components are arranged end to end to form a single path for current.
To find the total resistance within a series circuit use the given fomula:
Rtotal = R1 + R2 , where R stands for resistance
To find the current within a series circuit use Ohm's Law:
I = V/Rtotal, where V stands for voltage and I stands for current
To find the voltage within a series circuit use Ohm's Law again:
V=IRi, where I is the current and V is the voltage
Note, that the components divide the voltage according to their resistances, so V1/V2 = R1/R2