The following rules apply to a series circuit:
- The sum of the potential drops equals the potential rise of the source.
- The current is the same everywhere in the series circuit.
- The total resistance of the circuit (also called effective resistance) is equal to the sum of the individual resistances.
Ohm's Law may be used in a series circuit as long as you remember that you can use the formula with either partial values or with total values but you can not mix parts and totals.
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