Electrical

Series vs Parallel Resistor Networks

Electrical Diagrams · made in Skemio

Ladder schematic showing a 9V battery powering a series resistor rung alongside two parallel resistor rungs with ammeters.
Ladder schematic showing a 9V battery powering a series resistor rung alongside two parallel resistor rungs with ammeters.
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What it shows

  • Series circuits share the same current while voltage divides proportionally.
  • Parallel branches share full source voltage while currents divide inversely.
  • Equivalent resistance always rises in series and always drops in parallel.

The takeaway

Series divides voltage at constant current; parallel divides current at constant voltage across branches.

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